Smart’s Alitherm 400 range brings slim, stylish aluminium to your windows and doors. Choose from casement windows, bi-fold doors, sliding doors and front doors, all with narrow frames to let in more light and a quality finish built to last. The windows can be upgraded to PAS24 security for extra peace of mind. Download the brochure to see the full range.
Smart Alitherm 400 Windows and Doors Brochure
28 October 2026