The McAlpine ST90-HP2B is a trap body designed for use with 1½" waste pipe connections. It has a water seal of 50mm, which provides an effective barrier against unpleasant odors and gases from the drainage system. The trap body is compatible with McAlpine's range of trap tops and extension pieces, making it easy to customize and adapt to various plumbing configurations. The 1½" multifit outlet allows for easy connection to different types of pipes, such as plastic or copper pipes. Overall, the McAlpine ST90-HP2B is a versatile and reliable option for a variety of plumbing applications, providing effective trapping and drainage while allowing for easy customization and compatibility with different types of pipes. ・ 50mm Water Seal ・ Supplied with 135° Bend - BSP coupling nut x 1½" Multifit ・ flow rate 42 l/min when tested under a constant 15mm head of water in accordance with clause 5 of BS EN 274-2:2002 ・ Height of trap body is 85mm