The Alitherm Heritage Window range has been developed to suit both new build and refurbishment projects. Ideal for Victorian and Art Deco designs, the windows are proven in a wide range of projects across the UK and are available in both tilt & turn and standard casement formats. Each window replicates the distinctive slim profiles and sight lines of traditional steel windows, which were so prevalent in the early and mid-1900s. However, the timeless elegance of Alitherm Heritage is also accompanied by the outstanding thermal performance of a modern aluminium system, with each window delivering a B Energy Rating.