Beam Lifting Clamp Clamp Type Beam Web Clamp Material Steel Maximum Jaw Opening 12 in Minimum Jaw Opening 6 in Working Load Limit 22 000 lb Attachment Type Shackle Maximum Beam Thickness 1 in Compatible Beam Shape Flat Minimum Beam Thickness Not Applicable Overall Height 8 3/8 in Attachment Diameter 2 3/4 in Beam Mount Location Top Maximum Beam Width 12 in Minimum Beam Width 6 in Overall Depth 3 in Overall Width 20 1/2 in Standards ASME B30.20 ASME BTH-1