Seal the end of the channel drain or use knockout to add an outlet and connect to drain fittings with the 8 in. Pro Series™ Channel Drain End Cap/End Outlet. Works with the Deep Profile 8 in. Pro Series Channel Drain. Ideal for collecting heavy water flows flooding patios, plazas, parking lots, and sports fields. Made of polyvinyl chloride treated with UV inhibitors, it can be solvent-welded with PVC glue for a water-tight connection.