Size W460 x H870mm - Can be installed in either portrait or landscape positionRequires custom-made flashing (not supplied by VELUX)High-Performance Double Glazing (with laminated safety pane as standard to meet AS1288)Blocks approximately 70% radiant heat & approximately 99% harmful UVBAL 40 Bushfire Rating (Skylight only. Custom-made flashing required)VELUX recommends FCM is installed with a slight pitch (e.g. 3-5°) to help reduce water ponding on the glassSpecially designed for flat roofs, VELUX's FCM Skylight will provide a cost-effective solution to natural lighting. Tested for hail resistance and featuring a laminated safety glass, the FCM Skylight will not fade or discolour ensuring light remains effective for years to come. Specially designed for flat roofs, VELUX's FCM Skylight will provide a cost-effective solution to natural lighting. Tested for hail resistance and featuring a laminated safety glass, the FCM Skylight will not fade or discolour ensuring light remains effective for years to come.