Standard bottle trap. 1.1/2"/40mm with 3"/75mm seal.

White waste traps to BS 3943 and EN 274-1. Polypropylene. The inlets attach to wastes. 40 mm fits 1.1/2". The outlets accept 1.1/2"/40 mm pipe as stated. The outlet is the same size as the inlet unless stated. The seal dimensions refer to the approximate depth of water trapped in the bend. Meets current regulations which specify that where waste pipes discharge into a single stack (as is the current 'new build' requirement), the depth of water seal must be at least 75mm (3 inches).