Molded Grating FGI-AM(r) Antimicrobial Premium Polyester Span 12 ft. 4 ft Width None Surface Grit-Top Light Gray Bearing Bar Height 1-1/2 In. Bearing Bar Spacing Center-to-Center 1-1/2 In. Bearing Bar Width 0.25 In. 1-1/2 in Depth Square Mesh Pattern Mesh Size 1-1/2 in x 1-1/2 In. Max Temp 150 Degrees F