RPT Roof Through is ideal for safely routing and protecting cables and wires under roof tiles and into homes. The product is made from UV-stabilised Polypropylene which comes from recycled sources (30% post-consumer waste and 70% post-industrial waste by volume). RPT fits HellermannTyton’s UV-stabilised Solar Hose FCTUV16 (inner diameter 16.5 mm) providing robust protection against water ingress, which is important for protecting string cables and insulation.