PRO-PLUS® Trench Drains Josam revolutionized the drainage industry with the PRO-PLUS® Trench Drain System. It's manufactured using glass-fiber reinforced polyester (GRP) pressed from sheet molding compound (SMC), which is a composite of polyester resin, mineral fillers, and glass -fiber mats. SMC is a tried and tested GRP material with extremely high strength and dimensional stability. Learn more here Filter by PRO-PLUS® 100 Grates 100 PRO-SNAP® Grates Load Class A Load Class C Load Class F 100 Locking Bar/Bolt Down Grates Load Class A Load Class C Load Class E Load Class F PRO-PLUS® 200 Grates 200 PRO-SNAP® Grates Load Class C Load Class E Load Class F 200 Locking Bar/Bolt Down Grates Load Class A Load Class C Load Class E Load Class F PRO-PLUS-100C – PRO-PLUS® 100C 4" nom. 6" ext. SMC/GRP Trench Drain with or without slope PRO-PLUS-200C – PRO-PLUS® 200C 8" nom. 10" ext SMC/GRP Trench Drain with and without slope Josam's SMC/GRP channels, accessories, and select grates are proudly made in America.
