Smart Alitherm 400 Doors
Alitherm 400 doors are designed to complement the 400 window range, offering stylish lines and easy fabrication and installation. Available as open-in or open-out, single or double doors, they deliver excellent weather and thermal performance, PAS 24:2022 accredited security, and can be paired with Smart’s Designer Door panels and hardware to create sleek, modern entrances.
- Door Max Width: 1000mm (per sash)
- Door Max Height: 2400mm (per sash)
- Glazing Units: 24mm, 28mm, 32mm, 36mm, 40mm, 45mm
- 70mm Standard Frame Depth
- Typical U-value 1.4 W/m²K (using correct glass unit)
- DSER Band B
- PAS 24:2022 and Document L Compliant
U-Value
70mm frame depth
122mm sightlines
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Product Gallery
Colours and Finishes
Our range of Smart Systems products are available in over 200 RAL colours, as well as textured finishes and foils from Smart’s carefully curated collections. Plus, because they’re powder-coated, durability is never an issue. The colour is baked on, providing a lasting finish that won’t peel off or fade, and is guaranteed for 25 years.
Titanium Grey
Storm Grey
Steel Grey
Silver Grey
Golden Beach
Gold Pearl
Bronze
Black
Product Specifications
Explore Our Door Systems
Smart Heritage Doors
Designed to replicate traditional steel doors with modern aluminium technology, making them ideal for heritage buildings and conservation projects. Featuring slim sightlines, advanced thermal performance, and robust security, while offering a range of customisable finishes.
Smart Designer Entrance Doors
The Designer Door range from Smart offers a perfect combination of elegance and high performance, ensuring both style and security for any home. Each door is crafted to provide excellent energy efficiency, durability, and superior protection against weather and intrusions.
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Want to know more?
What configurations of Alitherm 400 doors are available?
Alitherm 400 doors are available as single or double doors, with options to open inwards or outwards, providing flexibility for various residential and commercial applications.
Are Alitherm 400 doors secure?
Yes, Alitherm 400 doors meet PAS 24:2022 security standards and offer a range of multipoint locking options, including key wind, lift lever, or slam locks, ensuring high levels of security.
Can Alitherm 400 doors be customised to match any property?
Absolutely, Alitherm 400 doors can be combined with Smart’s Designer Door panels and a wide range of standard door furniture, including colour-matched lever handles and stainless steel hardware, allowing you to create stylish and contemporary entrances for your customers.
What projects best suit Alitherm 400 doors?
Alitherm 400 is suitable for both residential and light commercial applications. Get in touch with BDC and we can guide you with appropriate specifications and products for any project.