This 50mm/40mm Underground Twinwall Ducting System is UK Manufactured With A Robust Corrugated Design Both Inside And Outside Made From A High Density Polyethylene Making It Light Weight And Highly Portable Cutting Installation Times. Its Is Easy To Cut And Join For Placing Through Draw Through. Used For The Protection Of ELECTRICITY CABLES. Which Comes In Various Diameters for All Types Of Cabling Thicknesses . Manufactured In Accordance With BS EN 50086-2-4:1994 Shipping is £12.50+ vat for ever 5 rolls purchased ( maximum 5 rolls per single order ) if you require more rolls place another order