Flavel Windsor HE Traditional High Efficiency Gas Fire The Flavel Windsor HE high efficiency gas fire is suitable for installation into almost any flue type and boasts an efficiency of 81.3% Traditionally styled, glass-fronted slimline inset gas fire Maximum heat output 2.9kW Moulded Coal fuel bed Slimline 120mm total depth - ideal for shallower flues including Pre-Cast Natural gas only Brass or Silver finish Optional slide control available for easy operation