US TRENCH DRAIN, 83360 - Black Polymer End Cap for Regular Trench Drain TRENCH DRAIN END CAP - Compact black polymer end cap/finishing point from US Trench Drain. USE TO CONNECT - Also acts as a connector to 3in sewer & drain pipe using the easy cut-out feature. DURABLE - Made from recycled UV stabilized poly propylene polymer. DIMENSIONS - 1.34 L x 4.96 W x 4.29 H. FOR HIGH WATER FLOW - Helps eliminate standing or pooling water by collecting and redistributing it and keeping exterior areas free from flooding.