The McAlpine STW1-R 19mm Water Seal Shower Trap with Universal Outlet is a plumbing component designed to connect a shower's waste pipe to the drainage system. It is installed below the shower tray and is commonly used in residential and commercial plumbing. The STW1-R features a 19mm water seal to prevent foul odours and gases from entering the living space and a universal outlet for easy connection to various waste pipe sizes. It also includes a removable grid for cleaning and maintenance. The trap offers a flow rate of 26 l/min with a 15mm head of water, has a height of 95mm, and features a 70mm diameter white plastic flange.