Mardome Trade triple skin rooflights feature a kerb, dome and insulated PVC upstand. The triple skin polycarbonate comes in four types: clear, textured, opal and bronze. Bronze tinted triple skin gives you a reduction in solar glare and heat gain as well as u-values of at least 1.8 W/mK thanks to Marlon FSX Longlife.Mardome Trade domes are the standard specification from Mardome and its no surprise. These rooflights are incredibly popular with their triple skin thats impact resistant and 200 times stronger than glass.Featuring a pristine white, multi-wall kerb, Mardome Trade rooflights are sleek and offer clean lines, as well as high levels of insulation from the multi-walled kerb. Their robust kerb and specially designed kerb fit means you dont need timber fillets plus their factory fitted membrane clamps will hold the roofing membrane in place during installation.Clear glazingClarity of vision of views and objects through the dome.Lighting effect: high visibility.Light transmission: 78%.Polycarbonate: triple skin.Tint: clear.Suitable for a structural opening size of 900mm x 1200mm.