What is GPM grating? GPM grating is a system made from solid polymer plastic with standard and custom open-space widths. Newly available GMP grating offers solid grating on a radius that will withstand extreme weights, and temperatures; it is virtually indestructible and comes with a 10-year warranty. Custom designed for each project, GPM grating comes in standard white with ASTM certified slip-resistant footing or any custom color options.
