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-GRP-C – GRP ADA/HP Grate, 1/2 Meter, Load Class "C", 4" Width 100-GSP-A – Galvanized Perf Grate, ADA/HP, 1/2 Meter, Load Class "A" 4" Width 100-GSS-A – Galvanized Slotted Grate, ADA/HP, 1/2 Meter, Load Class "A" 4" Width 100-SSP-A – SS Perforated Grate, ADA/HP, 1/2 Meter, Load Class "A" 4" Width 100-SSS-A – SS Slotted Grate, ADA/HP, 1/2 Meter, Load Class "A" 4" Width 100-SSWW-A – SS Decorative Grate, ADA/HP, 1/2 Meter, Load Class "A" 4" Width 100-VB-A-DC – Vinyl Bar Grate, ADA/HP, 1/2 Meter, Load Class "A" 4" Width
