Industrial Pultruded Grating Safe-T-Span(r) Isopthalic Polyester Fire-Retardant Resin (ISOFR) Span 3 ft. 4 ft Width I6010 Surface Grit-Top Yellow Bearing Bar Height 1 In. Bearing Bar Spacing Center-to-Center 1-1/2 In. Bearing Bar Width 0.60 In. 1 in Depth None Mesh Pattern Mesh Size None Max Temp 150 Degrees F