KlarValv is perfect when there is a need of much daylight for a low cost. As standard they are Arch-shaped , but can also be produced as Triangluar-shaped or Pyramid-shaped. They can be produced in a width from 1200mm up to 6000mm. And in length it is no limits! And the top material is of multi-walled Polycarbonate , in thickness between 10mm - 25mm. We can also sell with an extra insulation "10+16mm" or even "16+16mm". But for these the minimum width is 1500mm. You can get these roof lights with integreated Vents ! Either for smoke ventilation or for comfort ventilation (or both). Theses Roof lights are approved according to EN 14963. We produce steel base in heights between 200mm - 700mm. This base comes without insulation , these bases are to be insulated at site during mounting. We also produce an "overlay" type of base for mounting on existing bases , when this is wanted.