Fits a roof pitch of 15&8211;90 degrees, Rain sensor closes the window automatically when it rains, PEFC-certified timber, sourced from well-managed forests, Fully programmable remote control uses secure-radio-frequency technology, VELUX roof windows are best weatherproofed using VELUX window flashings, Double glazed with a u value of lees than 1.5 (W/m 2K), High quality moulded polyurethane with white lacquer finish & timber core, Forest friendly timber frame, High quality natural pine