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Aluminium French Doors
Midland Aluminium supplies aluminium French doors to installers and builders across the UK, using the trusted Smarts Alitherm 400 system. Available as open-in or open-out, in a wide range of colours and finishes, these are doors that combine strong thermal performance, excellent weather resistance and PAS 24:2022 approved security.
Whether you are working on a residential renovation or a commercial development, we can supply the right door at the right price — with a quote back to you within 24 hours.
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Outstanding Weather Resistance
Co-extruded gaskets in sashes and outer frames provide excellent weather protection, keeping wind and rain out.
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Multipoint Locking Options
Options include a choice of key wind, lift lever or slam lock multipoint locks, allowing you to specify a system for every project.
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Versatile Sash Options
Available in standard, slim line, flush and heritage style sashes, giving you the flexibility to match the door to the style of any property.
- Security
- Colours
Security You Can Rely On
Security is built into every Alitherm 400 aluminium French door from the ground up. Every door is tested and approved to PAS 24:2022 enhanced security standards, with a choice of multipoint locking options including key wind, lift lever and slam lock configurations.
Whether you are installing on a residential property or a commercial development, you can specify these doors with complete confidence — and your customers get the security performance they expect from a premium aluminium door system.
Colour Options
Alitherm 400 aluminium French doors are available in a huge range of colours and finishes, so there is always an option to suit your customer's property and their personal taste.
Whether they want a classic anthracite grey, a crisp white or something more individual, every finish is powder coated for a durable, long-lasting result.
Black
Cream
Pebble Grey
Agate Grey
Dark Brown
White
Slate Grey
Anthracite Grey
Black
Cream
Pebble Grey
Agate Grey
Dark Brown
White
Slate Grey
Anthracite Grey
A Trade Supplier You Can Depend On
Midland Aluminium has built its reputation on being a trade supplier that delivers — in every sense of the word. Every enquiry gets a response within 24 hours, our stock levels are kept high to minimise lead times, and our nationwide delivery network means we can get doors to your site quickly and reliably — wherever you are in the UK.
If you are looking for a trade supplier you can genuinely count on, get in touch today and find out how we can support your business.
Exceptional Weather Resistance As Standard
Poor weather sealing is one of the most common complaints homeowners have about their doors. With Alitherm 400 aluminium French doors, you can offer your clients doors that will withstand anything the weather can throw at them.
Co-extruded gaskets throughout the sashes and outer frames provide excellent protection against wind and rain, ensuring a consistently tight seal across the full width of the door. It is a system built to perform in the real world, on real projects, in all conditions.
Your Questions Answered
Not sure which product is right for your project, or want to know more about how we work? Here are the answers to the questions we get asked most often.
Our aluminium French doors are built using the Smarts Alitherm 400 system — one of the most trusted and widely specified aluminium door systems in the UK. It combines strong thermal performance, excellent weather resistance and PAS 24:2022 approved security in a versatile, easy-to-install package.
Yes. Alitherm 400 aluminium French doors are available as open-in or open-out, giving you the flexibility to meet the specific requirements of any project or customer brief.
Yes. The Alitherm 400 system is suitable for both residential and light commercial applications, including schools, colleges, hospitals, offices and public sector housing schemes, as well as individual homes. These high quality doors offer energy efficiency, slim sightlines and easy access to outdoor areas, making them a practical choice for commercial buildings. Contact us to discuss your specific project requirements.
Yes. Midland Aluminium supplies aluminium French doors to both trade customers and the general public. If you are a homeowner looking to upgrade your doors, get in touch with our team directly by phone or via our online enquiry form and we will guide you through the options. We can also put you in touch with a professional installer in your area to handle the fitting.
Yes. The Alitherm 400 system is available in a choice of sash styles including standard, slim line, flush and heritage options, making it possible to find a configuration that complements the character of older and period properties while delivering modern performance and security standards. With a variety of colours available and expansive glass panels, our French doors are the perfect fit for heritage properties where a seamless connection to outdoor spaces is needed.
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