The McAlpine WM3 1 1/2” Washing Machine Standpipe Trap is specifically designed for washing machine waste connections. It features a 1 1/2” outlet and a reliable water seal to effectively prevent odours from escaping into the room. Ideal for use with washing machines, this standpipe trap ensures smooth waste water flow while maintaining a secure connection to the plumbing system. Made from durable polypropylene, the McAlpine WM3 offers long-lasting performance and is built to withstand regular use. A great choice for ensuring efficient drainage and odour control in washing machine setups.