Looking for opinions on trench drains made from "glass-fiber reinforced polyester (GRP) pressed from sheet molding compound (SMC), which is a composite of polyester resin, mineral fillers and glass-fiber mats". Specifically, I have been directed toward a product MEA-JOSAM, 4" Pro-Plus 100 (CPS100). http://trenchdrainsupply.com/kit_pro_plus_100.asp I've also been told that the Glass Filled Nylon slotted grate will handle a pallet jack no worres.

I've heard opinions on both vinylester concrete, and HDPE. The former being excellent, but very pricey, with great chemical resistance, but a max temp rating of 180 degrees. HDPE should generally be steered clear off in a brewery I'm told.

Any thoughts appreciated.