Add an outlet to the channel drain, or use it to seal off one end. The 5 in. Pro Series™ Channel Drain End Cap/End Outlet left intact works as an end cap, or knock out the end to use as an end outlet on the 5 in. Deep Profile Channel and connect to 3 in. sewer and drain pipe and 4 in. sewer and drain fittings. Made of polyvinyl chloride, it can be solvent-welded with PVC glue for a water-tight connection.