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 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 100-DIS-E-DC – DI Slotted Grate 1/2 meter, Load Class "E" 4" Width 100-SSB-E – 1/2 Meter, Load Class "E" SS304 Bar Grate
