VELUX recessed flashing to provide drainage round the roof window. For use with slate up to 8mm thick (not interlocking). Roof pitch between 20-90 degrees Suitable for slate up to 8mm thick Provides a sleek and streamlined finish as the window is installed lower in the roof Suitable for roof pitches between 20-90° Provides drainage round the roof window Highly durable Sleek and streamlined finish round the window