US TRENCH DRAIN, 83370 - Black Polymer Converter for Regular Trench Drain FLOOD-FREE - US Trench Drain eliminates standing or pooling water by collecting and redistributing it and keeping exterior areas free from flooding. PERFECT FIT - Cut your regular-sized trench drains along any one of the 8" intervals of the trench drain length, then use the convertor to join lengths together. LIGHTWEIGHT - Manufactured from recycled UV stabilized Poly Propylene Polymer. REGULAR SIZE - Our convertor pieces only work with our Regular size drains & DO NOT work with our Compact drain system. DIMENSIONS - 1.34" L x 4.96" W x 4.29" H