Fiberglass Grating Clip, Material 316 Stainless Steel, Compatible Bearing Bar Spacing 1 1/2 in, Minimum Compatible Grating Opening Size 1 1/4 in, Compatible Screw Size 1/4 in, Maximum Compatible Bearing Bar Height 1 1/2 in, Compatible Support Thickness 1/4 in, Product Type Clip Only, Finish Unfinished, Standards ASTM-A-240-16A, ASTM-A-480-16B, ASTM-A-666-15, Includes M2 Clip, Nut and Bolt, Application Fastens Grating, Maximum Compatible Grating Opening Size 1 1/4 in