The multifunctional Spee-D Channel Drain Bottom Outlet Assembly features a 7 in. channel that comes with a prefastened grate to cut down installation time. Bottom outlet connects to 3 in. & 4 in. sewer and drain fittings. Channel is made of polyvinyl chloride and connects with a coupling; grate is made of polyethylene treated with UV inhibitors. The Spee-D Channel, part of the NDS Profile Channel series, is ideal for draining moderate flows from driveways, patios, pool areas, courtyards, and walkways with a 16.8 sq. in./ft. open surface area, 51 GPM/ft. flow rate. Channel drains, also called trench drains, are long, narrow drains and as part of a complete drainage system, collect water from surrounding surfaces and direct it away to drain pipe. The water is carried to a discharge point downstream such as a pop-up emitter, or to percolate into the ground with a dry well or infiltration trench. NDS channel and trench drains are designed for durability, drainage, and performance, and are a proven alternative to traditional concrete drains. Find the best channel drain or trench drain system for your needs with the NDS Channel Drain Selector tool at ndspro.com/choose-the-right-channel-drain.html. Founded in 1972, NDS is the leader in stormwater management solutions, the preferred choice of professionals, and the largest supplier of channel drains in North America. Our commitment is to provide proven products, tools, and expert support to help you get the job done right.