Modern Steel Front Door DIAMOND A2 36" X 80" BLACK/BLACK MIRRORED GLASS PANEL BLACK RHI

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".

Mirrored glass with stop-vision technology:
One-way visibility: The multilayer metallized coating (aluminum and silver) combined with a photochromic layer ensures that from the outside, it is impossible to see inside. However, in the dark, when the house is brightly lit, the effect is the opposite: it is impossible to see what is happening outside, but everything inside is visible.
Excellent interior view: The design maintains natural transparency, providing an excellent view from inside and allowing light to flow freely into the space.
Safety and fire resistance: Tempered glass increases safety by being highly durable and fire-resistant, withstanding direct contact with fire for 30 to 60 minutes.
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.

All doors have precut for American standard lock and deadbolt with back set 2 3/4".

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.

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".

Mirrored glass with stop-vision technology:

• One-way visibility: The multilayer metallized coating (aluminum and silver) combined with a photochromic layer ensures that from the outside, it is impossible to see inside. However, in the dark, when the house is brightly lit, the effect is the opposite: it is impossible to see what is happening outside, but everything inside is visible.
• Excellent interior view: The design maintains natural transparency, providing an excellent view from inside and allowing light to flow freely into the space.
• Safety and fire resistance: Tempered glass increases safety by being highly durable and fire-resistant, withstanding direct contact with fire for 30 to 60 minutes.

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.

All doors have precut for American standard lock and deadbolt with back set 2 3/4".

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.

Shipping & Order Confirmations

Order Confirmation
Once your order is placed, you’ll receive an email confirmation acknowledging receipt. This email will include the estimated production timeline (approximately 21 business days) and your estimated delivery date (ETA).

Special order doors are 14-18 weeks delivery

A second email will be sent once your order has shipped. If your order ships in multiple parts, you will receive separate email notifications for each shipment.
Tip: Be sure to save these emails and invoices for your records.

Shipping Rates
Our standard ground shipping is handled via common carriers and includes:

Residential delivery

Delivery appointment scheduling

Liftgate service

Pallet jack service

Starting at: $150
Production Lead Time: Approx. 14 business days
Shipping prices are subject to change without notice. We do not charge additional fees for crating.

Shipping Information
Large Items: Shipped via LTL (Less Than Truckload) freight – curbside delivery only

Smaller Items: Shipped via standard carriers

Typical Transit Times:
East Coast: 2–4 business days
West Coast: 5–7 business days

Note: Dealers may use their own freight company if preferred. For shipments outside the continental U.S., please contact Door Design Lab directly.

Will Call Service (Local Pickup)

Prefer to pick up your order yourself?
You're welcome to! Just give us a call ahead of time to schedule your warehouse pickup.