Conduit Clamp Back; Trade Size 4 Inch; Width 3-1/16 Inch; Length 8-7/8 Inch; Material Zinc Electroplated Malleable Iron; Standard Package 5; Approval UL 514B, UL (Canada and US); Used On IMC/Rigid Conduit; ROHS Compliant; Depth 1-1/16 Inch; Hole Size 1/2 Inch; For Use with Malleable Strap