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Transom/Sidelite Glass

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Description Technical Information Projects Shipping & Returns Reviews Product Questions How To Buy Warranty

The Diamond collection features modern metal exterior doors that will be an energy-efficient solution for your home and will last at least 20-25 years.

  • The slab material is zinc-galvanized steel, providing high break-in resistance (RC2/RC3 class). The slab thickness is 1 7/8".
  • The frame material is pine timber covered with galvanized steel, which ensures a rigid yet lightweight structure that prevents sagging.
  • Stainless steel decorative elements resist corrosion and scratches.
  • Thermal insulation is provided by thermal breaks, high-density polystyrene foam, and double sealing. The door can also withstand temperature fluctuations.
  • Sound insulation of 36 dB ensures a calm home atmosphere, free from extraneous street noises.

The thermal break is exceptional technology based on the fundamental laws of physics. To eliminate heat loss, it separates two metal elements in contact with each other, thereby delimiting the outer cold part of the door from the inner one. Thus, the door is always reliably protected from freezing, and your home retains more heat during the cold season and, vice versa, more coolness during the hot seasons. Since the inner surface of the door and the handle have a temperature close to room temperature, they are pleasant to touch at any time of the year.

Glass type

The double-chamber glazing combined with polystyrene insulation reduces heat loss by 40-50% compared to conventional exterior doors:

  • Construction: Composed of three glass layers with two air chambers, ensuring excellent thermal insulation.
  • Sound insulation and noise reduction: The multilayer structure reduces noise levels, damping low-frequency sounds such as traffic and construction noise.
  • Anti-glare effect: Eliminates reflections in low-light conditions, ensuring clear visibility even in the dark.

The glass thickness is 1 2/3".

Frosted glass is a milky white glass without transparency, providing complete privacy.

Innovative Low-E for interior glass:

  • UV protection: Blocks up to 99% of UV rays, effectively preventing the fading of furniture, carpets, and walls.
  • Infrared reflection: Helps retain heat during winter and blocks up to 70% of sunlight in summer, contributing to a comfortable indoor microclimate.
  • Condensation prevention: Minimizes the cold glass effect and reduces the risk of condensation, thus enhancing overall energy efficiency.
  • Eco-friendly: Reduces the carbon footprint by lowering energy consumption.
  • Aesthetic integrity: Maintains natural transparency and accurate color reproduction.

Finishing

Powder coating is applied via electrostatic spraying, followed by baking at 180-200°C. It is an extra durable painting with reliable protection from UV rays and mechanical damage.

Exterior and interior shades: white, black, and anthracite—choose your ideal color combination. For example, black/black, black/white, white/anthracite, and so on.

Transom and sidelites (optional)

Glass type: clear, frosted, or mirrored with stop-vision technology.

  • Construction: Glued timber with thermal break.
  • Glass: Triple-glazed sealed unit with two chambers.

Hardware

The hardware set includes:

  • Two concealed hinges support up to 80 kg each, providing enhanced break-in resistance.
  • Stainless steel threshold reinforced with zinc-galvanised frame. Doors can be installed with a metal threshold extension with a bevel for water drainage.

Belldinni is one of the first manufacturers in the US that offers exterior doors with concealed hinges.

In addition, we have ensured that every customer has complete freedom in choosing the hardware for Diamond doors, allowing you to select any handle, from classic American styles to modern railing designs.

Transom and 2 sidelites (frosted)

Transom and sidelites

The door unit kit includes a transom and two sidelites, which are decorative stationary sections installed above, to the left and to the right of the exterior door.

  • Construction: Glued timber with thermal break.
  • Glass: Triple-glazed sealed unit with two chambers.
  • Glass type: Frosted.
Other
Exterior color Black
Interior color White
Glass color Frosted
Panel type A10
Panel color Black
Size 68" x 96"
Swing direction RHI
Transom count 1
Sidelites count 2
Sidelites size 16"
Sidelite color Black
Sidelite \ Transom color Frosted
Actual Unit Size 69" x 95 11/16"
Actual Sidelites size 15 13/16"
Rough opening Size 71" x 96 11/16"
Slab thickness 1 7/8"
Steel thickness 3/64"
Material Zinc-galvanized steel
Thermal Insulation Thermal breaks, high-density polystyrene foam, pine wood block
Frame width 2 11/16"
Frame material Pine timber covered with galvanized steel
Sealing Double loop sealing
Threshold Stainless steel threshold reinforced with zinc-galvanised frame
Threshold width 2 11/16"
Threshold extension (Optional) Extension width - 1 7/8" or 2 13/16" Threshold width with extension - 4 9/16" or 5 9/16"
Finishing Type Extra durable painting with reliable protection from UV rays
Glass type of insert Double sided Tempered glass
Overall thickness of the glass 1 3/4"
Door closer Optional
Barn door pul Optional (Black, Stainless steel)
Electronic keypad Optional
Hinges type Concealed hinges Armadillo U3D7800.VPG (White, Black)
Sidelite Glass construction Triple glazed sealed unit with two chambers
Sidelite construction Glued laminated timber with thermal brake
Transom Glass construction Triple glazed sealed unit with two chambers
Transom overall thickness of the glass 1 1/4"
Transom width 14" - 16"
Transom Length 69"
Transom construction Glued laminated timber with thermal break
Sound Insulation 37 dB
Note This door is not hurricane certified
Packaging Pre-hung unit ready for installation , Factory packing on pallet
Warranty 24 months

In this section, you’ll find real examples of our projects where people have already brought stylish and functional door solutions to life. Each space tells a unique story, combining thoughtful design with practicality.

Explore how different ideas come to life in real interiors and get inspired for your own project. Whether you're looking for a minimalist touch or a bold statement piece, our projects will help you visualize how a door can become an integral part of a well-balanced space.


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Shipping and order confirmations

Upon placing the order, you will receive a confirmation by e-mail that your order has been received. Production lead time is around 14 business days. ETA will be provided in confirmation-mail as well. You will then get a second e-mail when the order has been shipped. If your order requires multiple shipments, you will be receiving more e-mail confirmations about them. Please, make sure you saved these e-mails (invoices) for the record.


Shipping rates

Please note that the rates shown below are for the ground shipping via common carrier. These rates cover such services as residential delivery, delivery appointment, liftgate and pallet jack service. Prices can be changed without notice. We don’t charge any additional fees for crating unlike many companies do.

Shipping rates from $80
Lead time starting from 14 business days


Shipping*

Once an order is processed, it is then shipped out via LTL (for large items) or carriers (for smaller items). LTL shipments are curbside delivery only. Ship times vary upon final destination, however the average is 2-4 business days for the East Coast and 5-7 business days for the West Coast. Dealers are also more than welcome to use their own freight company if needed. Please contact Door Design Lab directly for all orders outside of the continental United States.


Will call service

The buyer may pick up the order by their own means. In order to do that, you need to call us prior to your arrival to the warehouse and schedule a pick-up.


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We accept the following payment methods:

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Solid core feels super sturdy.
John D
Which is great since I spill coffee often.
John
It was easy to install and feels very sturdy.
Kia
Thanks to Polina for her excellent customer service.
Ronald
Thanks to Anastasia for her excellent customer service.
Link
Thanks to Val for the smooth ordering process.
Sara
It was easy to install and feels very sturdy.
Rita
Very satisfied with the quality and appearance.
Paulo
Anastasia provided excellent customer service.
Gia
Highly satisfied with this purchase.
Helen
The door feels very sturdy and durable.
Olivia
The door feels sturdy and looks elegant.
Amelia
Solid core construction feels premium.
Claire
Solid core construction feels premium.
Mikhail
The modern aesthetics are an added bonus.
Mark
Solid core feels super sturdy.
John D

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