Heritage French Door system features elegant French doors with linear glazing bars, complemented by fixed side and top panels for a balanced and traditional aesthetic. Manufactured using 28 mm double‑glazed toughened glass, achieving a glass U‑value of 1.0—currently one of the highest performance specifications available in the UK. This results in an overall system U‑value of 1.4. The frames are constructed from coated, thermally broken aluminium to ensure excellent insulation and long‑term durability. Standard stock colours include RAL 9005, with RAL 7021 available on a 4–6 week lead time.