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3-D Adjusted Hinges

Hinges that can be adjusted on 3 axes.

Astragal

A molding or trim attached to the meeting edges of adjacent door leaves in order to prevent swing through and to conceal the gap.

Backplate

Refers to rectangular plates for hardware.

Bar

A narrow, horizontal, vertical, or diagonal wood member extending the total length or width of a glazed opening, used to separate individual pieces of glazing.

Barn Door

Door slab that attached to wall by visible sliding hardware on the top of the slab.

Baseboard (Plinth)

A molding covering the joint of a wall and the adjoining floor.

Bifold Door (Bi-fold)

Doors so hinged as to fold against the door jamb. Bifold doors are normally classified as either two- or four- leaf units.

Blind Mortise And Tenon

A method of construction of stile and rail wood doors where openings are machined into, but not through the stiles and where the ends of the rails are so machined as to fit these openings.

Bottom Rail

The bottom rail of a stile and rail door.

Brick Molding

A molding used on an exterior door, typically applied to prehung units, put on the outside of the frame as a stop, or to hide brick, siding, stucco or concrete.

Butt Joint

A joint formed by square edge surfaces (ends, edges, and faces) coming together; end butt joint, edge butt joint.

Bypass Door (By-pass door)

Bypass sliding doors consist of two doors, mounted one behind the other, such that they can be moved parallel to the doorway to provide access.

Casing

Wood paneling or molding that surrounds the interior edge of a window or door frame. Used to cover the gap between the door frame and wall.

Ceramic Inks

Inks made from ceramic substance.

Composite

A composite whose ingredients include cellulosic elements. These cellulosic elements can appear in the form of, but are not limited to: distinct fibers, fiber bundles, particles, wafers, flakes, strands and veneers. These elements may be bonded together with naturally occurring or synthetic polymers. Also, additives such as wax or preservatives may be added to enhance performance.

Composite Panel

A door panel composed of a wood derivative such as MDF.

Concealed Hinge

Hinges that are placed in the cuts of the door frame. Can't be observed from any side when door is closed.

Conventional Doors

A regular door which is also known as a hinged door.

Core (Filling)

The innermost layer or center section in component construction of the door.

Cpl Plastic (Continuously pressed laminate)

A laminated structure or material, especially one made of layers fixed together to form a hard, flat, or flexible material.

Crown Entablature

Decorative molding that placed adove some of the doors.

Deadbolt

A bolt engaged by turning a knob or key, rather than by spring action; a deadlock.

Door Closer

Any mechanical device that closes a door in a controlled manner, preventing it from slamming, in general after someone opens it.

Door Frame

A group of components (wood, aluminum or steel) that are assembled to form an enclosure and support for a door. Also known as door jambs.

Door Handle

A door handle is a small round object or a lever that is attached to a door and is used for opening and closing it.

Door Schedule

A document, which has all the information a manager will require in selecting the correct door for a designated position.

Door Stop

Limits the door's opening swing.

Door Unit

A door with a jamb, hinges, and is bored for door hardware. Exterior door units also include casing, brick molding, astragal and weather strips and is pre-hung.

Door-Lite (Lite)

An assembly of a frame and glass panel, or glass window. Many doors have more than one lite or lites.

Double Acting Door

Door which is hinged so that it can be opened both inward and outward.

Doweled Construction

A method of construction of stile and rail wood doors where holes are machined into, but not through, the stiles and where matching holes are machined into the ends of the rails. Glue and dowels are inserted into these holes to attach the rail to the stile.

Dummy

Something designed to resemble and serve as a substitute for the real or usual thing. Usually refer to a handle without latching mechanism.

Eco Veneer

A type of veneer that is able to look almost identical to natural wood, but is created in a man made process that allows it to be eco-friendly.

Edge Band

A strip along the outside edges of the two sides and/or top and bottom of the door.

Enamel (Lacquers)

An opaque or semitransparent glassy substance applied to hard surfaces for ornament or as a protective coating.

Engineered Construction

A method of constructing a wood stile and rail door that minimizes the use of solid lumber components. Stiles, rails and mullions have solid lumber edges only (where visible), and have face veneers over a composite core. Panels are also produced using face veneers and/or composite cores.

Engineered Materials

A general term used to describe any wood or plant fiber composite panel. Such products as Particleboard, MDF, SCL and LVL are described as Engineered Fiber. Typically they are made from wood or plant fiber or wood pieces and have specific quality requirements.

Extension

Special type of molding used when wall thickness exceeds jambs size resulting in uncovered space between jamb and casing. Extension used to close this gap.

Exterior Doors (Entry doors)

A door that can be used to enter or leave a building.

Face Width

The total width of the stile, rail or panel minus the width of the moulding patterns. The most common way of showing dimensions on a stile and rail door elevation.

Faceplate

A metal plate on the edge of the door, next to the latch or deadbolt, the faceplate protects the lock from wear and tear.

Faux Lite

Snap-in wood grilles are used either on the outside of the glass or within its double glazing to create the effect of lites, without actually having to frame each one individually. This significantly reduces the cost of the doors, whilst obtaining a similar effect.

Finger Joint

A series of interlocking fingers precision cut on the ends of two pieces of wood which mesh together and are held rigidly in place with adhesive.

Finish (Coating)

Сomplete the manufacture or decoration of (a material, object, or place) by giving it an attractive surface appearance.

Fire Rated Doors

A door which has been constructed in such a manner that when installed in an assembly will pass a fire test under neutral (UL 10B) or positive (UL 10C) pressure criteria and can be rated as resisting fire for 20 minutes (1/3 hour), 45 minutes (3/4 hour), 1 hour, or 1-1/2 hours. The door must be tested and carry an identifying label from a qualified inspection agency.

Fire Resistant Composite Core

A core, typically incorporating minerals rather than wood fiber as the primary component, designed to improve fire resistance and thermal transmission.

Fire Seal

Special type of seal used to protect doors from fire.

Flat Casing

Casings that flat and even in appearance.

Flat Panel

A door panel in which the perimeter does not contain a machined profile (panel raise). Constructed with veneer on the face and a composite core for a stained finish, or MDF for a painted finish.

Flush Bolt (Dead bolt)

A bolt used to on a non active door to keep it stationary. It is flush with the face or edge of the door when retracted.

French Door

A door assembly of stiles and rails (and possibly muntins and bars) surrounding a single or multiple glazed opening.

Glass Stop

A small wood moulding (bead) applied to the perimeter of glazed openings to secure the glazing materials within a door.

Groove

A long, narrow cut or depression, especially one made to guide motion or receive a corresponding ridge.

Handle (Grip)

Refers to vertical handles.

Hanging Stile

The stile of a door to which hinges are secured.

Hardboard

Homogeneous panels manufactured primarily from inter-felted lignocellulosic (wood) fibers consolidated under heat and pressure with density of 31 lb/ft3 (497 kg/m3) or more.

Hardware

Mechanical parts of the door.

Hardwood

General term used to designate lumber or veneer produced from temperate zone deciduous or tropical broad-leaved trees in contrast to softwood, which is produced from trees which are usually needle bearing or coniferous. The term does not infer hardness in its physical sense.

Header

A support which is built in above a door.

Heat Transmission

Process describing transmission of heat from one object to another.

Hex Key (Allen key; Allen wrench)

Is a simple driver for screws that have heads with internal hexagonal recesses (sockets).

High Density Fiberboard (HDF)

No longer defined under ANSI A208.2; HDF is a marketing term to define MDF grades above Grade 150.

High Pressure Decorative Laminate

A high impact resistant surface material consisting of decorative surface paper impregnated with melamine resins pressed over multiple craft paper layers saturated with phenolic resins, thermoset at high pressure and temperature.

Hinge Caps

Caps that cover mechanism of invisible hinges.

Hinges

A movable joint or mechanism on which a door, gate, or lid swings as it opens and closes or which connects linked objects.

Hollow Core

Door without any type of filling. Such doors usually consist of two MDF panels attached to an inner frame without anything in between.

Honeycomb Filling

Doors that fill in with empty hexagon structure usually made of hard cardboard.

Insert (Inlay)

Part that is inserted into the door.

Interior Doors (Internal doors)

A door inside a building.

Intermediate Rail

A rail, other than the top and bottom rail, used to separate panels, or to separate panels from glazing materials in a combination door. Also referred to as "cross rail”.

Invisible Frame (Concealed Frame)

Door frame usually made of metal without any casing attached. Part of the frame covered with plaster or paint to create illusion of door attached directly to the wall.

Jamb (Single rabbet frame (SRF))

A side post or surface of a doorway, window.

Kerf Door Frame

"A kerf is a slot cut on the edge of the jamb, used for wrapping the drywall corner bead (square or rounded drywall corners) into the jamb. Kerfed flat jambs provide for a “caseless” opening, with drywall connecting directly to the door frame, thus requiring no case mouldings.
Kerf Sealing is known for its easy installation. Many door frames are supplied with a narrow groove, known as a Kerf, in which a weatherstrip is applied. There are neither screws nor adhesives necessary for installation and no extra maintenance is required, making it the most feasible solution."

Kiln-Dried

Lumber dried in a closed chamber in which the removal of moisture is controlled by artificial heat and usually by controlled relative humidity.

Knob

Refers to round handles.

L-Casing

Casing that is shaped as an L, and that can be adjusted by length to the wall.

Laminated Veneer Lumber Core (LVLC)

Manufactured by laminating veneer with all grain laid-up parallel. It can be manufactured by using various species of wood fiber in various thicknesses.

Latch Bolt

A spring-loaded bolt with an angled edge.

Lead Time

The time between the initiation and completion of a production process.

Left Hand Inswing (RHI)

Type of door opening when door opens with left hand inside of the room.

Left Hand Outswing (LHO)

Type of door opening when door opens with left hand outside of the room.

Lever

Refers to horizontal handles.

Lintel

A horizontal support of timber, stone, concrete, or steel across the top of a door or window.

Lock

A mechanism for keeping a door, lid, etc., fastened, typically operated only by a key of a particular form.

Lock Block

A concealed block the same thickness as the door stile or core which is adjacent to the stile at a location corresponding to the lock location and into which a lock is fitted.

Lock Cylinder

Central part of the lock that keys get inserted in.

Lock Rail

A horizontal stiffening member of a paneled door in or to which the lock is fixed.

Louver

A panel constructed of wood or metal slats installed in an opening to allow light, air and noise. Common types are slat and Chevron – an inverted "V” wood louver (vented or non-vented).

Louver Door

A door assembly of stiles and rails where the interior is filled with slat or chevron louvers.

Magic Door (Hidden Barn System)

Sliding door system same as Barn Door but sliding mechanism covered with door slab.

Magnetic Catch (Magnetic lock)

Door lock based on magnetic tension rather than classic door latch.

Map

Minimum Advertised Price

Medium Density Fiberboard (MDF)

The generic name for a panel or core manufactured from lignocellulosic fibers combined with a synthetic resin or other suitable binder and bonded together under heat and pressure in a hot press by a process in which the added binder creates the entire bond.

Medium Density Fiberboard Core (MDFC)

Wood fiber and/or agri-fiber based materials that comply with ANSI A208.2.

Medium Density Overlay (MDO)

Typically MDO is kraft paper saturated with resin and cured under high heat and pressure to make a hard, smooth, paintable surface.

Meeting Edges

Two adjacent door edges not separated by a mullion or transom bar. These are found in pair, Dutch door and door & transom applications.

Meeting Stile

The vertical edge of a door or window, in a pair, which is adjacent to the other door or window.

Membrane (Bladder) Pressed Pane

Insert panel produced by moulding to profile a wood or composite core (usually MDF or particleboard) then pressing veneer to the core using a flexible pressing surface.

Milling

Designed to cut or shape wood using a rotating tool.

Moiré

Powder paint, slightly rough to the touch.

Moldings

An ornamentally shaped outline as an architectural feature.

Mortise

A hole or recess cut into a part which is designed to receive a corresponding projection (a tenon) on another part so as to join or lock the parts together.

Mortise & Tenon Joinery

A method of locking or joining/ bonding two pieces of wood together.

Mortise Lockset

A lock which is set within the body of a door in a recess or mortise, as opposed to one attached to the door surface.

Moulded Door

The same structure as that of flush door. The only difference is that the surface material is a moulded skin made of MDF. Skins can also be made out of hardboards.

Moulding (Inlay)

Profiled wood trim pieces that surround the perimeter of panels or glazing, but does not protrude above the surface of the surrounding stiles and rails.

Moulding (Overlay)

Profiled wood trim pieces that surround the perimeter of panels or glazing, and protrudes above the surface of the surrounding stiles and rails.

Mull Post

The post between the door and sidelite which is created by the door frame.

Mullion

A vertical member used to separate panels. Also known as a "mull”.

Multi-Point Locking System

This lock system which is generally 3 or 5 point system. It is controlled by levers in multiple places in the door panel and frame. Used for protection against high pressure winds caused by hurricanes and/or storms, as well as just added security for the entry way.

Muntin

A short bar, either horizontal or vertical, used to separate individual pieces of glazing material, but which does not extend the full width or length of the glazed opening. Also known as "munt”.

Non Mortise Butterfly Hinge

Simple hinge that attaches directly to the jamb without any cut in.

Non-Bonded Core

Stiles and rails (edge bands) are not glued to the core prior to face materials.

Nonstadard Sizes

Size of the slab that don't inlay with standart sizes on the market.

Panel

The part of the door which is raised above or sunk below the level of the rest of the door to create depth.

Panel Door

A door assembly of stiles, rails and one or more panels. Intermediate rails or mullions are used to separate panels. Panels can be raised or flat.

Particleboard (Chipboard)

A panel or core product composed of small particles of wood and wood fiber that are bonded together with synthetic resin adhesives in the presence of heat and pressure.

Plank Doors

A wood door without stiles which is constructed of vertical boards held together by horizontal battens.

Plastic Brackets

Plastic pieces used in assembly of invisible frame.

Ply

A single sheet of veneer or several strips laid with adjoining edges that may or may not be glued, which forms one veneer lamination in a glued panel. In some constructions, a ply is used to refer to other wood components such as particleboard or MDF.

Plywood

A type of strong thin wooden board consisting of two or more layers glued and pressed together with the direction of the grain alternating.

Pocket Door

A sliding door that, when fully open, disappears into a compartment in the adjacent wall.

Polypropylene (PPL, PP)

Plastic materia used as a finish for the doors.

Polyurethane (PUR, PU)

Plastic material, which exists in various forms. In doors usually used as insolation.

Pre Cut

Cut in door or frame made before distribution to simplify assembly process.

Prefinished Door

Products that are stained and sealed at the factory or warehouse before distribution.

Prefitting

Trimming of the door for width and/or height.

Prehung Door (Pre-Hung)

A full door unit with the door hinged, jamb, frame, sill and moulding.

Primed

Door with prime coat applied on it.

Production Time

Time required to make the door on factory.

Pull

Same as handle.

Rail

A horizontal structural member of a stile and rail door. Fits between the stiles.

Rails/Horizontal Edges

Top and bottom edge bands of door.

Raised Panel

A door panel whose faces are raised above the perimeter and whose edges are shaped to fit into grooves in the stiles, rails and mullions. These panels are typically bladder pressed or rim banded for a stained finish or MDF for a painted finish.

Ral

A colour matching system.

Right Hand Inswing (LHI)

Type of door opening when door opens with right hand inside of the room.

Right Hand Outswing (RHO)

Type of door opening when door opens with right hand ouside of the room.

Rim Banded (Mitered) Panel

Insert panel with a solid lumber edge banded around the core then veneered and profiled.

Rosette

Refers to circular plates.

Rough Opening

An opening in the wall made by standard framing materials, sized around a pre-hung unit. This is usually 2" taller and 2" wider than the door unit size.

Rta

Ready To Assemble

Rustic

Lacking excessive refinement, having a rough surface or finish.

Safety Glazing Materials

Glazing materials so constructed, treated or combined with other material as to minimize the likelihood of cutting or piercing injuries resulting from human contact with the material. The most common types used in doors are tempered or laminated. Safety glazing materials are required to meet codes and federal regulations.

Shutting Stile

The stile of a hinged door which strikes the rabbet of the jamb when the door is shut and on which the fastenings are secured.

Sidelite

The side panels on either side of the door, they can be filled with glass or wood. Typically there are two, one on each side of the door, or there can be one on either side of the door.

Silk-Screen Printing

Printing technique where a mesh is used to transfer ink (or dye) onto a substrate, except in areas made impermeable to the ink by a blocking stencil.

Skin

The face layer of a flush or stile and rail door, whether flat or configured, which is used for facings for flush wood doors.

Slab (Door Slab)

Only the door, no jamb, hinges, threshold, or door hardware.

Smart Sweep

Mechanical attachment that covers gap between door slab and the floor.

Solid Wood

Solid wood is lumber that has been milled directly from trees.

Sound Transmission Class (STC)

A single number rating system derived from measured values of sound transmission loss or the acoustical performance of a building element, such as a door, window or wall. The higher the STC value, the better the rating and the better the acoustical performance value. Tested in accordance with ASTM E413 and E90.

Special Order

Order that is not in stock in warehouse and required longer lead time to fulfill.

Spindle

This is the piece that connects the two knobs. It attaches to one knob, passes through the first backplate, the door, the tube latch, the second backplate and finally attaches to the other knob.

Split-Type Frame

Frame consist of several pieces that split in once anothe when assebled, made of metal.

Splits (Hairline)

Separations of wood fiber running parallel to the grain.

Standard Door

By industry practice, a standard door is book size in both width and height.

Staved Lumber Core (Stave-core; SLC)

Made with any combination of blocks or strips of wood, not more than 2-1/2 inches (64 mm) wide, of one species of wood glued together (in butcher block fashion), with joints staggered in adjacent rows.

Sticking

A profile machined on to the edges of stiles, rails, mullions, muntins or bars, adjacent to the panels, glazing materials or louvers.

Stile

The outermost vertical member of a stile and rail door.

Stile & Rails Doors (Constituent part door; Stile & rails doors)

Door that assebled from stiles and rails.

Strike Plate

A metal plate attached to a door jamb or lidded container, against which the end of a spring-lock bolt strikes when the door or lid is closed.

Structural Composite Lumber Core (SCLC)

An engineered wood product that is made by fusing a network of wood strands together with a water-resistant adhesive to produce a strong, solid and stable product that has true structural properties with excellent screw holding properties and very high split resistance.

Tempered Glass (Safety glass)

A glass that was treated by heating and cooling the glass so when broken it will crumble instead braking into shards.

Thermal Break

A thermal break is a barrier or “break” in a window or door frame. Thermally broken door systems are used whenever there is a difference between indoor and outdoor temperatures. Metal is an excellent conductor of heat and cold, meaning that you can lose a great deal of heat through a door frame.

Top Rail

Horizontal piece that sits across the very top of the door.

Transom

A mounted piece of glass or wood which is above the Door unit, come in many different shapes and sizes.

Trench (Groove)

A long, narrow ditch used to connect one piece of wood with another.

Treshold (Sub sill (or sill))

The bottom or piece of a door.

Trim

The covering over a doorjamb that gives the finished look. this is usually a strip of wood.

Veneer

A thin decorative covering of fine wood applied to a coarser wood or other material.

Weather Strip

A narrow strip that is flexible which surrounds the door to protect from moisture and air coming in when the door is closed.

Weatherboard

Each of a series of horizontal boards nailed to outside walls with edges overlapping to keep out the rain.

Wood Fiber Filling (ISO Core, Smart Core)

Part of door core consisting of wood fiber glued together. Less dense than any other composite wood material.

Wood Filler

An aggregate of resin and strands, shreds, or flour of wood, which is used to fill openings in wood and provide a smooth, durable surface.

Wood Flush Door

An assembly consisting of a core and one or more edge bands, with 2 plies of wood veneer with laminate, wood, or wood derivative on each side. All parts are composed of wood, wood derivatives, fire resistant composites or decorative laminates.

Wood Molding (Bead; draft fillet; molding; fillet; rod; string)

A strip of wood along the top of a wall or round a door, which has been made into an ornamental shape or decorated with a pattern.

Zinc Galvanized

Galvanization or galvanizing is the process of applying a protective zinc coating to steel or iron, to prevent rusting.

Astragal

A molding or trim attached to the meeting edges of adjacent door leaves in order to prevent swing through and to conceal the gap.

Backplate

Refers to rectangular plates for hardware.

Bar

A narrow, horizontal, vertical, or diagonal wood member extending the total length or width of a glazed opening, used to separate individual pieces of glazing.

Barn Door

Door slab that attached to wall by visible sliding hardware on the top of the slab.

Baseboard (Plinth)

A molding covering the joint of a wall and the adjoining floor.

Bifold Door (Bi-fold)

Doors so hinged as to fold against the door jamb. Bifold doors are normally classified as either two- or four- leaf units.

Blind Mortise And Tenon

A method of construction of stile and rail wood doors where openings are machined into, but not through the stiles and where the ends of the rails are so machined as to fit these openings.

Bottom Rail

The bottom rail of a stile and rail door.

Brick Molding

A molding used on an exterior door, typically applied to prehung units, put on the outside of the frame as a stop, or to hide brick, siding, stucco or concrete.

Butt Joint

A joint formed by square edge surfaces (ends, edges, and faces) coming together; end butt joint, edge butt joint.

Bypass Door (By-pass door)

Bypass sliding doors consist of two doors, mounted one behind the other, such that they can be moved parallel to the doorway to provide access.

Casing

Wood paneling or molding that surrounds the interior edge of a window or door frame. Used to cover the gap between the door frame and wall.

Ceramic Inks

Inks made from ceramic substance.

Composite

A composite whose ingredients include cellulosic elements. These cellulosic elements can appear in the form of, but are not limited to: distinct fibers, fiber bundles, particles, wafers, flakes, strands and veneers. These elements may be bonded together with naturally occurring or synthetic polymers. Also, additives such as wax or preservatives may be added to enhance performance.

Composite Panel

A door panel composed of a wood derivative such as MDF.

Concealed Hinge

Hinges that are placed in the cuts of the door frame. Can't be observed from any side when door is closed.

Conventional Doors

A regular door which is also known as a hinged door.

Core (Filling)

The innermost layer or center section in component construction of the door.

Cpl Plastic (Continuously pressed laminate)

A laminated structure or material, especially one made of layers fixed together to form a hard, flat, or flexible material.

Crown Entablature

Decorative molding that placed adove some of the doors.

Deadbolt

A bolt engaged by turning a knob or key, rather than by spring action; a deadlock.

Door Closer

Any mechanical device that closes a door in a controlled manner, preventing it from slamming, in general after someone opens it.

Door Frame

A group of components (wood, aluminum or steel) that are assembled to form an enclosure and support for a door. Also known as door jambs.

Door Handle

A door handle is a small round object or a lever that is attached to a door and is used for opening and closing it.

Door Schedule

A document, which has all the information a manager will require in selecting the correct door for a designated position.

Door Stop

Limits the door's opening swing.

Door Unit

A door with a jamb, hinges, and is bored for door hardware. Exterior door units also include casing, brick molding, astragal and weather strips and is pre-hung.

Door-Lite (Lite)

An assembly of a frame and glass panel, or glass window. Many doors have more than one lite or lites.

Double Acting Door

Door which is hinged so that it can be opened both inward and outward.

Doweled Construction

A method of construction of stile and rail wood doors where holes are machined into, but not through, the stiles and where matching holes are machined into the ends of the rails. Glue and dowels are inserted into these holes to attach the rail to the stile.

Dummy

Something designed to resemble and serve as a substitute for the real or usual thing. Usually refer to a handle without latching mechanism.

Eco Veneer

A type of veneer that is able to look almost identical to natural wood, but is created in a man made process that allows it to be eco-friendly.

Edge Band

A strip along the outside edges of the two sides and/or top and bottom of the door.

Enamel (Lacquers)

An opaque or semitransparent glassy substance applied to hard surfaces for ornament or as a protective coating.

Engineered Construction

A method of constructing a wood stile and rail door that minimizes the use of solid lumber components. Stiles, rails and mullions have solid lumber edges only (where visible), and have face veneers over a composite core. Panels are also produced using face veneers and/or composite cores.

Engineered Materials

A general term used to describe any wood or plant fiber composite panel. Such products as Particleboard, MDF, SCL and LVL are described as Engineered Fiber. Typically they are made from wood or plant fiber or wood pieces and have specific quality requirements.

Extension

Special type of molding used when wall thickness exceeds jambs size resulting in uncovered space between jamb and casing. Extension used to close this gap.

Exterior Doors (Entry doors)

A door that can be used to enter or leave a building.

Face Width

The total width of the stile, rail or panel minus the width of the moulding patterns. The most common way of showing dimensions on a stile and rail door elevation.

Faceplate

A metal plate on the edge of the door, next to the latch or deadbolt, the faceplate protects the lock from wear and tear.

Faux Lite

Snap-in wood grilles are used either on the outside of the glass or within its double glazing to create the effect of lites, without actually having to frame each one individually. This significantly reduces the cost of the doors, whilst obtaining a similar effect.

Finger Joint

A series of interlocking fingers precision cut on the ends of two pieces of wood which mesh together and are held rigidly in place with adhesive.

Finish (Coating)

Сomplete the manufacture or decoration of (a material, object, or place) by giving it an attractive surface appearance.

Fire Rated Doors

A door which has been constructed in such a manner that when installed in an assembly will pass a fire test under neutral (UL 10B) or positive (UL 10C) pressure criteria and can be rated as resisting fire for 20 minutes (1/3 hour), 45 minutes (3/4 hour), 1 hour, or 1-1/2 hours. The door must be tested and carry an identifying label from a qualified inspection agency.

Fire Resistant Composite Core

A core, typically incorporating minerals rather than wood fiber as the primary component, designed to improve fire resistance and thermal transmission.

Fire Seal

Special type of seal used to protect doors from fire.

Flat Casing

Casings that flat and even in appearance.

Flat Panel

A door panel in which the perimeter does not contain a machined profile (panel raise). Constructed with veneer on the face and a composite core for a stained finish, or MDF for a painted finish.

Flush Bolt (Dead bolt)

A bolt used to on a non active door to keep it stationary. It is flush with the face or edge of the door when retracted.

French Door

A door assembly of stiles and rails (and possibly muntins and bars) surrounding a single or multiple glazed opening.

Glass Stop

A small wood moulding (bead) applied to the perimeter of glazed openings to secure the glazing materials within a door.

Groove

A long, narrow cut or depression, especially one made to guide motion or receive a corresponding ridge.

Handle (Grip)

Refers to vertical handles.

Hanging Stile

The stile of a door to which hinges are secured.

Hardboard

Homogeneous panels manufactured primarily from inter-felted lignocellulosic (wood) fibers consolidated under heat and pressure with density of 31 lb/ft3 (497 kg/m3) or more.

Hardware

Mechanical parts of the door.

Hardwood

General term used to designate lumber or veneer produced from temperate zone deciduous or tropical broad-leaved trees in contrast to softwood, which is produced from trees which are usually needle bearing or coniferous. The term does not infer hardness in its physical sense.

Header

A support which is built in above a door.

Heat Transmission

Process describing transmission of heat from one object to another.

Hex Key (Allen key; Allen wrench)

Is a simple driver for screws that have heads with internal hexagonal recesses (sockets).

High Density Fiberboard (HDF)

No longer defined under ANSI A208.2; HDF is a marketing term to define MDF grades above Grade 150.

High Pressure Decorative Laminate

A high impact resistant surface material consisting of decorative surface paper impregnated with melamine resins pressed over multiple craft paper layers saturated with phenolic resins, thermoset at high pressure and temperature.

Hinge Caps

Caps that cover mechanism of invisible hinges.

Hinges

A movable joint or mechanism on which a door, gate, or lid swings as it opens and closes or which connects linked objects.

Hollow Core

Door without any type of filling. Such doors usually consist of two MDF panels attached to an inner frame without anything in between.

Honeycomb Filling

Doors that fill in with empty hexagon structure usually made of hard cardboard.

Insert (Inlay)

Part that is inserted into the door.

Interior Doors (Internal doors)

A door inside a building.

Intermediate Rail

A rail, other than the top and bottom rail, used to separate panels, or to separate panels from glazing materials in a combination door. Also referred to as "cross rail”.

Invisible Frame (Concealed Frame)

Door frame usually made of metal without any casing attached. Part of the frame covered with plaster or paint to create illusion of door attached directly to the wall.

Jamb (Single rabbet frame (SRF))

A side post or surface of a doorway, window.

Kerf Door Frame

"A kerf is a slot cut on the edge of the jamb, used for wrapping the drywall corner bead (square or rounded drywall corners) into the jamb. Kerfed flat jambs provide for a “caseless” opening, with drywall connecting directly to the door frame, thus requiring no case mouldings.
Kerf Sealing is known for its easy installation. Many door frames are supplied with a narrow groove, known as a Kerf, in which a weatherstrip is applied. There are neither screws nor adhesives necessary for installation and no extra maintenance is required, making it the most feasible solution."

Kiln-Dried

Lumber dried in a closed chamber in which the removal of moisture is controlled by artificial heat and usually by controlled relative humidity.

Knob

Refers to round handles.

L-Casing

Casing that is shaped as an L, and that can be adjusted by length to the wall.

Laminated Veneer Lumber Core (LVLC)

Manufactured by laminating veneer with all grain laid-up parallel. It can be manufactured by using various species of wood fiber in various thicknesses.

Latch Bolt

A spring-loaded bolt with an angled edge.

Lead Time

The time between the initiation and completion of a production process.

Left Hand Inswing (RHI)

Type of door opening when door opens with left hand inside of the room.

Left Hand Outswing (LHO)

Type of door opening when door opens with left hand outside of the room.

Lever

Refers to horizontal handles.

Lintel

A horizontal support of timber, stone, concrete, or steel across the top of a door or window.

Lock

A mechanism for keeping a door, lid, etc., fastened, typically operated only by a key of a particular form.

Lock Block

A concealed block the same thickness as the door stile or core which is adjacent to the stile at a location corresponding to the lock location and into which a lock is fitted.

Lock Cylinder

Central part of the lock that keys get inserted in.

Lock Rail

A horizontal stiffening member of a paneled door in or to which the lock is fixed.

Louver

A panel constructed of wood or metal slats installed in an opening to allow light, air and noise. Common types are slat and Chevron – an inverted "V” wood louver (vented or non-vented).

Louver Door

A door assembly of stiles and rails where the interior is filled with slat or chevron louvers.

Magic Door (Hidden Barn System)

Sliding door system same as Barn Door but sliding mechanism covered with door slab.

Magnetic Catch (Magnetic lock)

Door lock based on magnetic tension rather than classic door latch.

Map

Minimum Advertised Price

Medium Density Fiberboard (MDF)

The generic name for a panel or core manufactured from lignocellulosic fibers combined with a synthetic resin or other suitable binder and bonded together under heat and pressure in a hot press by a process in which the added binder creates the entire bond.

Medium Density Fiberboard Core (MDFC)

Wood fiber and/or agri-fiber based materials that comply with ANSI A208.2.

Medium Density Overlay (MDO)

Typically MDO is kraft paper saturated with resin and cured under high heat and pressure to make a hard, smooth, paintable surface.

Meeting Edges

Two adjacent door edges not separated by a mullion or transom bar. These are found in pair, Dutch door and door & transom applications.

Meeting Stile

The vertical edge of a door or window, in a pair, which is adjacent to the other door or window.

Membrane (Bladder) Pressed Pane

Insert panel produced by moulding to profile a wood or composite core (usually MDF or particleboard) then pressing veneer to the core using a flexible pressing surface.

Milling

Designed to cut or shape wood using a rotating tool.

Moiré

Powder paint, slightly rough to the touch.

Moldings

An ornamentally shaped outline as an architectural feature.

Mortise

A hole or recess cut into a part which is designed to receive a corresponding projection (a tenon) on another part so as to join or lock the parts together.

Mortise & Tenon Joinery

A method of locking or joining/ bonding two pieces of wood together.

Mortise Lockset

A lock which is set within the body of a door in a recess or mortise, as opposed to one attached to the door surface.

Moulded Door

The same structure as that of flush door. The only difference is that the surface material is a moulded skin made of MDF. Skins can also be made out of hardboards.

Moulding (Inlay)

Profiled wood trim pieces that surround the perimeter of panels or glazing, but does not protrude above the surface of the surrounding stiles and rails.

Moulding (Overlay)

Profiled wood trim pieces that surround the perimeter of panels or glazing, and protrudes above the surface of the surrounding stiles and rails.

Mull Post

The post between the door and sidelite which is created by the door frame.

Mullion

A vertical member used to separate panels. Also known as a "mull”.

Multi-Point Locking System

This lock system which is generally 3 or 5 point system. It is controlled by levers in multiple places in the door panel and frame. Used for protection against high pressure winds caused by hurricanes and/or storms, as well as just added security for the entry way.

Muntin

A short bar, either horizontal or vertical, used to separate individual pieces of glazing material, but which does not extend the full width or length of the glazed opening. Also known as "munt”.

Non Mortise Butterfly Hinge

Simple hinge that attaches directly to the jamb without any cut in.

Non-Bonded Core

Stiles and rails (edge bands) are not glued to the core prior to face materials.

Nonstadard Sizes

Size of the slab that don't inlay with standart sizes on the market.

Panel

The part of the door which is raised above or sunk below the level of the rest of the door to create depth.

Panel Door

A door assembly of stiles, rails and one or more panels. Intermediate rails or mullions are used to separate panels. Panels can be raised or flat.

Particleboard (Chipboard)

A panel or core product composed of small particles of wood and wood fiber that are bonded together with synthetic resin adhesives in the presence of heat and pressure.

Plank Doors

A wood door without stiles which is constructed of vertical boards held together by horizontal battens.

Plastic Brackets

Plastic pieces used in assembly of invisible frame.

Ply

A single sheet of veneer or several strips laid with adjoining edges that may or may not be glued, which forms one veneer lamination in a glued panel. In some constructions, a ply is used to refer to other wood components such as particleboard or MDF.

Plywood

A type of strong thin wooden board consisting of two or more layers glued and pressed together with the direction of the grain alternating.

Pocket Door

A sliding door that, when fully open, disappears into a compartment in the adjacent wall.

Polypropylene (PPL, PP)

Plastic materia used as a finish for the doors.

Polyurethane (PUR, PU)

Plastic material, which exists in various forms. In doors usually used as insolation.

Pre Cut

Cut in door or frame made before distribution to simplify assembly process.

Prefinished Door

Products that are stained and sealed at the factory or warehouse before distribution.

Prefitting

Trimming of the door for width and/or height.

Prehung Door (Pre-Hung)

A full door unit with the door hinged, jamb, frame, sill and moulding.

Primed

Door with prime coat applied on it.

Production Time

Time required to make the door on factory.

Pull

Same as handle.

Rail

A horizontal structural member of a stile and rail door. Fits between the stiles.

Rails/Horizontal Edges

Top and bottom edge bands of door.

Raised Panel

A door panel whose faces are raised above the perimeter and whose edges are shaped to fit into grooves in the stiles, rails and mullions. These panels are typically bladder pressed or rim banded for a stained finish or MDF for a painted finish.

Ral

A colour matching system.

Right Hand Inswing (LHI)

Type of door opening when door opens with right hand inside of the room.

Right Hand Outswing (RHO)

Type of door opening when door opens with right hand ouside of the room.

Rim Banded (Mitered) Panel

Insert panel with a solid lumber edge banded around the core then veneered and profiled.

Rosette

Refers to circular plates.

Rough Opening

An opening in the wall made by standard framing materials, sized around a pre-hung unit. This is usually 2" taller and 2" wider than the door unit size.

Rta

Ready To Assemble

Rustic

Lacking excessive refinement, having a rough surface or finish.

Safety Glazing Materials

Glazing materials so constructed, treated or combined with other material as to minimize the likelihood of cutting or piercing injuries resulting from human contact with the material. The most common types used in doors are tempered or laminated. Safety glazing materials are required to meet codes and federal regulations.

Shutting Stile

The stile of a hinged door which strikes the rabbet of the jamb when the door is shut and on which the fastenings are secured.

Sidelite

The side panels on either side of the door, they can be filled with glass or wood. Typically there are two, one on each side of the door, or there can be one on either side of the door.

Silk-Screen Printing

Printing technique where a mesh is used to transfer ink (or dye) onto a substrate, except in areas made impermeable to the ink by a blocking stencil.

Skin

The face layer of a flush or stile and rail door, whether flat or configured, which is used for facings for flush wood doors.

Slab (Door Slab)

Only the door, no jamb, hinges, threshold, or door hardware.

Smart Sweep

Mechanical attachment that covers gap between door slab and the floor.

Solid Wood

Solid wood is lumber that has been milled directly from trees.

Sound Transmission Class (STC)

A single number rating system derived from measured values of sound transmission loss or the acoustical performance of a building element, such as a door, window or wall. The higher the STC value, the better the rating and the better the acoustical performance value. Tested in accordance with ASTM E413 and E90.

Special Order

Order that is not in stock in warehouse and required longer lead time to fulfill.

Spindle

This is the piece that connects the two knobs. It attaches to one knob, passes through the first backplate, the door, the tube latch, the second backplate and finally attaches to the other knob.

Split-Type Frame

Frame consist of several pieces that split in once anothe when assebled, made of metal.

Splits (Hairline)

Separations of wood fiber running parallel to the grain.

Standard Door

By industry practice, a standard door is book size in both width and height.

Staved Lumber Core (Stave-core; SLC)

Made with any combination of blocks or strips of wood, not more than 2-1/2 inches (64 mm) wide, of one species of wood glued together (in butcher block fashion), with joints staggered in adjacent rows.

Sticking

A profile machined on to the edges of stiles, rails, mullions, muntins or bars, adjacent to the panels, glazing materials or louvers.

Stile

The outermost vertical member of a stile and rail door.

Stile & Rails Doors (Constituent part door; Stile & rails doors)

Door that assebled from stiles and rails.

Strike Plate

A metal plate attached to a door jamb or lidded container, against which the end of a spring-lock bolt strikes when the door or lid is closed.

Structural Composite Lumber Core (SCLC)

An engineered wood product that is made by fusing a network of wood strands together with a water-resistant adhesive to produce a strong, solid and stable product that has true structural properties with excellent screw holding properties and very high split resistance.

Tempered Glass (Safety glass)

A glass that was treated by heating and cooling the glass so when broken it will crumble instead braking into shards.

Thermal Break

A thermal break is a barrier or “break” in a window or door frame. Thermally broken door systems are used whenever there is a difference between indoor and outdoor temperatures. Metal is an excellent conductor of heat and cold, meaning that you can lose a great deal of heat through a door frame.

Top Rail

Horizontal piece that sits across the very top of the door.

Transom

A mounted piece of glass or wood which is above the Door unit, come in many different shapes and sizes.

Trench (Groove)

A long, narrow ditch used to connect one piece of wood with another.

Treshold (Sub sill (or sill))

The bottom or piece of a door.

Trim

The covering over a doorjamb that gives the finished look. this is usually a strip of wood.

Veneer

A thin decorative covering of fine wood applied to a coarser wood or other material.

Weather Strip

A narrow strip that is flexible which surrounds the door to protect from moisture and air coming in when the door is closed.

Weatherboard

Each of a series of horizontal boards nailed to outside walls with edges overlapping to keep out the rain.

Wood Fiber Filling (ISO Core, Smart Core)

Part of door core consisting of wood fiber glued together. Less dense than any other composite wood material.

Wood Filler

An aggregate of resin and strands, shreds, or flour of wood, which is used to fill openings in wood and provide a smooth, durable surface.

Wood Flush Door

An assembly consisting of a core and one or more edge bands, with 2 plies of wood veneer with laminate, wood, or wood derivative on each side. All parts are composed of wood, wood derivatives, fire resistant composites or decorative laminates.

Wood Molding (Bead; draft fillet; molding; fillet; rod; string)

A strip of wood along the top of a wall or round a door, which has been made into an ornamental shape or decorated with a pattern.

Zinc Galvanized

Galvanization or galvanizing is the process of applying a protective zinc coating to steel or iron, to prevent rusting.