Keylite's Top Hung roof windows are perfect in low pitch roofs as the window opens outward, maximising the daylight that enters the room. Integrated, expanding thermal collar, as standard. Pre-fitted Flick-fit Brackets - installation in under 2 minutes. Sash Finger Spring - to enable a smooth re-fit of sash. Controlled trickle ventilation through the top handle, even when the window is securely closed. Easily control your electric roof window with a handheld remote. External rain sensor to automatically close electric roof windows. Recessed fit as standard. Operate multiple electric roof windows and blinds. Suitable for roof pitches 15° – 75° Centre Pane U-Value: 1.1 W/m2.K fully glazed. 10 year guarantee. Warm edge glazing as standard. FSC Certified Download Datasheet