Grating Clip, Close Mesh, 316 Stainless Steel, Fits Bearing Bar Height 1 1/4 In, Fits Bearing Bar Spacing 3/8 to 3/4 In, Fits Support Structure Thickness 1/4 to 3/4 In, Fits Grating Opening Size 1 In, Meets/Exceeds ASTM A-240, Fastens Close-Mesh Grating To Structural Shapes, Includes 1/4-20 Hex Head Cap Screw, Package 50