Products / VELUX Balcony Roof Window (GDL)

A two-part roof window whose top-hung upper sash opens outward while the lower section unfolds into a balcony with side railings, for installation at 35 to 53 degree roof pitch. The frame, sash and ventilation flap are laminated pinewood and the exterior is metal-clad. It is offered as GDL PK19 (outside frame 37 1/16 x 99 1/4 in.) and the narrower GDL MK19 (30 11/16 x 99 1/4 in.), with step flashing for asphalt shingles, wood shakes or slate and high-profile flashing for tile.