Beam Clamp Beam Clamp Type C-Clamp Beam Mount Location Bottom Top Clamp Length 1.25 in Clamp Material Cast Iron Clamp Material Finish Not Applicable Clamp Width 1 in For Beam Shape/Type H-Beam I-Beam For Threaded Rod Size 1/2 in Load Capacity 950 lb Series 310 Standards cUL Listed FM Approved UL Listed