This aluminium window system is designed as a extremely slim-line thermally efficient replacement for steel windows. Our Heritage windows use the latest ‘Polyamide’ thermal break technology, has complete and authentic range of furniture, replica steel look-a-like profiles and is still a fraction of the cost of steel windows. Due it‘s high specifications our Heritage Windows are suitable for NEW BUILD as well as replacement or refurbishment projects and can (and has been) approved for use in Grade II listed buildings and conservation areas. When combined with our patented Ste’alth Secure™ Locking, it makes for an incredibly strong and secure Heritage window.