Suitable for use as a floorlight or rooflight. Maintains the visual appearance of 254/90 whilst being designed to achieve larger clear spans up to 2640mm when installed as a floorlight for pedestrianloadings of 5KN/M². Contains 198 x 198mm glass lenses set into reinforced concrete ribs which are spaced at 254mm centreswith an overall panel thickness of 125mm. Weight – 186 kg/m². In the interest of safety we recommend that when used as a floorlight, the glass lenses are sandblasted to increase slip resistance.