This component can be used two ways: 1) as an end cap, to seal off one end of the channel drain; or 2) knock out and connect to the end of the channel to use as an outlet. The 5 in. Pro Series™ Channel Drain End Cap/End Outlet works with the 5 in. Shallow Profile Channel; outlet connects to 1-1/2 in. Sch. 40 Fittings. Made of polyvinyl chloride, it can be solvent-welded with PVC glue for a water-tight connection.