Give your clients the best Windows on the market!

Alitherm Heritage is the ideal choice for listed buildings, heritage renovations, and replica-refurbishment projects where maintaining traditional aesthetics is essential. Designed as a direct replacement for steel windows, it combines authentic heritage styling with modern thermal performance through Smart's advanced polyamide thermal break technology.

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Available in a wide range of standard and bespoke colours, including metallic, textured, dual-colour, and anodised-effect finishes, Alitherm Heritage offers exceptional design flexibility. The system accommodates fixed windows, tilt & turn, side-hung, and top-hung casements, with a choice of Heritage, Art Deco, and Marine Grade stainless steel hardware options.