Our Rafter Bar (End Bar) for a Self Support System is used to finish polycarbonate sheeting.The end bar includes an adjustable adaptor to finish off the edge of the roof without the need for an additional F section or closer.The bar is extremely robust and can be used with any sheet thickness from 16mm to 35mm supporting spans up to 6 metres.The bar comes in two parts, the sheet is laid in place on the neoprene gasket and the snap cap is pushed down into position.