VELUX Original Roof Window Anti-Heat Awning Blind for FK08, F08, FK06, F06, FK04, F04

No tape measure required. For the right size, find the window code reference located at the top of the open VELUX roof window Compatible with VELUX roof windows with reference codes: GGL F04, GGL F06, GGL F08, GGL FK04, GGL FK06, GGL FK08, GGU F04, GGU F06, GGU F08 Stops strong sunlight before it reaches the window pane, reducing heat in-take by up to 77% Manual operation with hooks - while not in use, the blind rolls up out of sight under its casing. Easy installation from the inside Does NOT fit solar and electrically operated VELUX windows, smoke ventilation windows and windows with later installed motors or ventilation kits.