Reduces 40mm waste pipe down to 32mm. Made from polypropylene, this quick and easy to install waste system incorporates a compression outlet that accepts plastic pipes to BS 5254 and BS 5255 and copper pipes to BS 659 and BS 2871. No solvent welding required. It is recommended that externally installed polypropylene waste systems are protected against prolonged exposure to sunlight with exterior gloss paint. Manufactured to BS5254, BS EN 1451-1: 2000.