Smart Alitherm 400 Aluminium Glazed Door

Our stunning Smart Aluminium glazed doors are a high security, modern and stylish entrance door perfect for porches, back doors, side doors and garages.

Finance Available


Our stunning Smart Aluminium glazed doors are a high security, modern and stylish entrance door perfect for porches, back doors, side doors and garages.

Available with a quick-glaze bead for faster installation, these aluminium doors offer a stronger and more stylish alternative to uPVC or timber.

Brand/Model
Material
Delivery Time
Glazing
Cill Options
Standard Colours
Handle Colours
Guarantee

*Delivery time is a typical example and is dependent on postcode and current workload.

Frame Depth
Sash Depth
Sightlines
Max Height
Max Width
Max Sash Weight
U Value
Air Permeability
Water Tightness
Resistance to Wind Load
2022 Document L compliant
Security
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Step 1 - Viewed from the outside


Width: Measure in 3 points; top, middle and bottom and take the smallest measurement and deduct 10mm.

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Step 2 - Viewed from the outside


Height: Measure again in 3 points; left, centre and right and take the smallest measurement and deduct 10mm. Measure to the underside of the existing cill unless it is NOT going to be replaced i.e concrete cill.

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Step 3 - Viewed from the outside


Diagonals: Ensure the opening is square by measuring the diagonals as shown in red. There should be no more than 5mm difference between each measurement.

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Step 4 - Viewed from the inside


Repeat the process from the inside of the door from plasterwork to plasterwork and make note of the smallest measurements as before

Why Are Smart Glazed Doors So Popular?


There are many instances in which you may be looking for a full glass door. These doors are popular for the entrance to a porch, in order to maximise the natural light in the home. They are also popular as side doors, back doors and as an entrance into a garage. Aluminium is fast becoming sought after over uPVC and timber, as it is stronger, has more colour options and lasts a lot longer with less maintenance. Watch the video above to learn more about our Smart Glazed Door options.

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Quick Glaze Beads

Quick Glaze Beads
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Bespoke Glazing

Bespoke Glazing
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PAS24 Approved

PAS24 Approved

Unfortunately, we do not currently offer installation on this product.

DIY Delivery

DIY Delivery


Have your item delivered to your doorstep, factory setup and ready to install. Perfect if you have your own installer or can fit yourself.


Perfect if you have your own installer or can fit yourself.


  • Pre-bonded sashes - no glazing required
  • Nationwide site delivery
  • Made bespoke to your exact measurements
  • 10 Year Product Warranty
  • Technical advice for you or your installer
Quick Glaze Beads
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Quick Glaze Beads

Smart’s Quick-Glaze bead system is pre-gasketed, so you can simply clip the beads in place without having to measure and cut lengths of wedge gasket. This can save potentially hours of fitting time and no special tool is required to remove the beads.

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Made For New <br class="hidden lg:block"> Building Regs
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Made For New Building Regs

The Smart Alitherm 400 door range was designed specifically to meet new stricter 2022 building regulations. That makes these doors perfect for any application (new build or renovation) without the need for expensive glass upgrades.

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Delivered in 10 days
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Delivered in 10 days

Our stock colour options (Anthracite Grey, Jet Black, White & Anthracite Grey on White) are all available to be delivered to your door in just ten working days.* This fast turnaround time makes the Smart door ideal for projects that need to get moving quickly!

*Please note delivery is also dependent on next availability in your postcode area.

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Bespoke Colours & Finishes
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Bespoke Colours & Finishes

Along with 3 stock colours, you have the option of 250+ RAL colours to choose from for something more bespoke. By special order, we can even provide a range of exclusive textured finishes from the ‘Smart Sensations’ collection.

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Bespoke Colours & Finishes
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Bespoke Colours & Finishes

Upgrade to integral blinds for an added touch of privacy. Our integral blinds sit inside the double glazed unit, meaning they never need to be cleaned and can’t catch dust or grime. Better yet, blinds can greatly reduce the amount of UV transmission, making them perfect for south facing elevations or rooms that heat up easily. Integral blinds are one of the most overlooked ways to keep a room cool! 

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Finance Available


Spread the cost with a range of tailored finance packages.
More Info

Buy Now, Pay 2025:

14.9% APR Representative

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