Aluminium Windows

Alitherm 400

Alitherm 400 windows and doors achieve UValues as low as 1.4 when double glazed, with triple glazed options offering UValues as low as 0.9, exceeding the requirements of Building Regulations Part L. The system is rigorously tested to PAS24 as standard and exceeds the requirements for weather resistance and security performance.

Available with square or flush sash profile, the slim and stylish lines of Alitherm 400 provide a perfect choice for a wide variety of projects, including both new build and refurbishment, residential and light commercial applications, proudly made at our purpose built 35,000 square foot factory at Truro.

Top that with an unrivalled choice of colour options and marine grade paint finish and you'll be sure to find your ideal windows and doors from the Alitherm 400 range.

Key Benefits of Alitherm 400 Windows
  • PAS 24:2016 Approved providing enhanced security
  • Low UValues, double or triple glazed
  • Huge range of RAL colours plus a bespoke range of coloured and textured paint finishes*

*See the Smart Colours & Finishes brochure below, but note that it does not include the full extent of the colour options available.

Alitherm 400 windows and doors
Complete the look with Alitherm 400 doors

The Alitherm 400 range of windows can be complimented perfectly with a choice from a range of doors to match, whatever the style of your home or commercial premises.

See the Alitherm 400 door range