Suitable for use as a floorlight or rooflight. A lightweight construction only available in a pre-cast format, designed for clear spans up to 1605mm when installed as a floorlight for pedestrian loadings of 5 KN/M². Contains 127 x 127mm glass lenses set into reinforced concrete ribs which are spaced at 165mm centres with an overall panel thickness of 75mm. Weight – 127KG/m². In the interests of safety we would recommend that when used as a floorlight, the glass lenses are sandblasted to increase slip resistance.