Seal the end of the Dura Slope® Channel Drain with the End Cap and stop the flow of water. The end cap should be installed at the shallowest end of a channel run. Cut to desired channel height with a hacksaw along the designated cut guides. The end cap can be inserted into the female end of the channel or secured with screws (SKU DS-123) onto the male end at points indicated on the end cap. The end cap is made of high-density polyethylene (HDPE) containing UV inhibitors