The new dimension - The Midi Heki. Cutout size: 70 x 50 cm for optimised light transmission. Cover grey tinted, extremely damage resistant polycarbonate. Double glazed, aerodynamic design. Large glass cover for bad weather, big glass overlap. Cover easy to raise, using an operating bar which is locked into guiderails. 3 different opening positions: completely open, medium setting and bad weather setting. Closed position is automatically locked. Mounting: clamp principle, outer frame is placed above hatch and insulated. The inner frame is simply clipped in place. The inner frame has a black pleated insect protection roller blind and a pleated light exclusion roller blind. Sun reflected by aluminium coated upper surface of light exclusion roller blind. Height above roof 105 mm.