SIERRA DUB AC
$3,660.00
Production takes 5 weeks
This prehung stainless steel entry door features triple glazing, dual sealing, ROTO multi-point lock, and anti-burglary reinforcements. Excellent thermal and sound insulation – ready to install.
Wood color options are available upon request; however, please note that availability may vary depending on the specific model and size. Not all products in our catalog support wood textures due to design or material limitations.
If you are interested in a wood finish, we encourage you to contact us via email with the product name, size, and any preferred color or texture. Our team will be happy to check availability and assist you with customization options.
Select all options in the configurator before adding the door to the cart
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Modern Stainless Steel Entry Door – Energy Efficient, Secure, and Prehung
This premium stainless steel door is designed for exceptional thermal performance, sound insulation, and home security. The 2.2-inch thick door slab is filled with PUR polyurethane foam and wood, offering excellent insulation and durability. A dual sealing system ensures your home stays quiet and warm while reducing vibration and preventing air leaks. The seals do not expand or contract under weather changes, maintaining a consistent fit year-round.
The door frame is reinforced at hinge and locking points to enhance anti-burglary protection. It is completely prehung on the frame, making it fast and easy to install – no assembly required.
The complete set includes:
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Door and door frame with two weather gaskets
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ROTO strip lock system with an independent upper lock and 3 reinforced anti-theft bolts
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Two sets of inserts with keys
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Standard door handle (optional T-bar long handle available)
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Viewfinder (included on solid doors)
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3x adjustable hinges for anti-burglary protection
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Aluminum threshold with gasket
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3x anti-theft bolts
Performance Specifications:
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Full door leaf: R-Value 4.8
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Glazed door leaf: R-Value 3.8
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Sound insulation: 31 dB (solid leaf)
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Triple glazing used for glass inserts
Ideal for those looking for a stylish, secure, and energy-efficient door that’s ready to install right out of the box.
SIERRA Doors
Profile Construction
Constructed entirely from stainless steel, these doors feature internal insulation made of foam and wood, all encased in a stainless steel sheet for maximum durability and a premium finish.
Technical Specifications & Set Inclusions
- Production & Delivery: Approximately 4 weeks for production + 1.5 weeks for delivery.
- Warranty: 2-year manufacturer warranty.
- Frame Size: The stainless steel door frame is 9 cm thick.
- Available Dimensions (Single Door with Frame):
- Width: from 807mm to 1107mm
- Height: from 2000mm to 2090mm
- Locking System: The door set includes a multi-point lock system. A detailed view of the system is available on the manufacturer’s website.
- The door set includes:
- Stainless steel door and door frame.
- High-quality door handle.
- Adjustable hinges.
- Multi-point locking system.
- Threshold strip (detailed dimensions and pictures available).
- Standard lock insert with 5 keys.
Glazing
The glass in our doors features triple-pane windows. All panes are connected with spacer frames. Two of them are covered with Low-E coatings that provide natural light while helping to limit heat gain and thermal energy loss. It is also possible to choose P4 anti-burglary glass or safety glass VSG 33.1.
- Standard Glazing Package: 4th/16Ar/4/16Ar/4th
- Safety Glass: VSG 33.1 // 4 // 4
- P4 Anti-burglary Glass
A wide range of glass options is available, including energy-saving, sound-absorbing, safety, anti-burglary, and sunscreen windows. The most popular ones are milk glass, decorative or mirror glass, as well as bronze reflex glass.
- Light Permeability: Milk (Frosted) Glass: 89%; Mirror Glass: 68%; Graphite Reflex Glass: 42%.
Colours
The SIERRA collection is available in a range of standard RAL colors:
- White: RAL 9010
- Golden oak: RAL 8003
- Walnut: RAL 8024
- Wenge: RAL 8019
- Winchester: RAL 8001
- Mahogany: RAL 3007
- Dark Antracite: RAL 7016
- Light Antracite: RAL 7040
- Black matt: RAL 9005
- Smooth anthracite: RAL 7015
- Bleached oak: RAL 1019
Wala Hidden Hinges
We use Wala hidden hinges that combine high durability, numerous assembly advantages and a discreet, elegant form. Hinges are invisible when the door is closed. The 3D adjustment function provides a convenient way of adjusting the pressure, height and side adjustment (left/right) of the door. Hinges allow for trouble-free installation and removal of the door leaf/slab. Depending on the door height there are at least 3 hinges per door leaf/slab.
Roller hinges WR WALA
WR WALA are minimalistic, modern looking, high quality roller hinges. They have been tested and are certified by the German IFT ROSENHEIM. Hinges are protected by patent law and can be adjusted: vertically: -5 to 5mm / -0.2″ to 0.2″, gap: -2.5 to 2.5 mm / -0.1″ to 0.1″ , seal pressure: -1.5 to 1.5 mm / -0.05″ to 0.05″ . When it comes to finish they are available in stainless steel or any colour from the RAL palette (hinges will be painted in the same colour as the door). Depending on the door height there are at least 3 hinges per door leaf/slab.
| Opening way: | Left hand – opening to inside, Left hand reverse – opening to outside, Right hand – opening to inside, Right hand reverse – opening to outside |
|---|---|
| Door height with frame: | 80" +$110.00, 82.3", 82" +$112.00, custom height from 70.7" to 82.3" +$110.00 |
| Glazing: | Graphite reflex, Milk frosted glass, Mirror glass, Standard ( transpared – clear glass ) |
| Color: | Black + $110.00, Bleached oak + $110.00, Concrete + $110.00, Corten – architectural rust + $110.00, Dark anthracite RAL 7016, Double color ( doors in different colors inside and outside ), Golden oak, Light anthracite ( silver grey ) RAL 7040, Mahogany, Smooth anthracite RAL 7015, Turners oak, Walnut, Wenge, White, Winchester |
| Rain deflector: | No, Yes + $40.00 |
| T-bar - long vertical handle or normal handle: | Only a normal door handle black + $70.00, Only a normal door handle silver, Yes, T-bar Straight, circular shape 47.2" black + $320.00, Yes, T-bar Straight, circular shape 47.2" silver + $270.00, Yes, T-bar Straight, rectangular shape 63" black + $320..00, Yes, T-bar Straight, rectangular shape 63" silver + $280.00 |
| The color of the frame around the glass: | Black, Silver |
