Beam Clamp Beam Clamp Type Purlin Clamp Beam Mount Location Bottom Top Clamp Length 2 in Clamp Material Cast Iron Clamp Material Finish Not Applicable Clamp Width 1.5 in For Beam Shape/Type C-Purlin For Threaded Rod Size 3/8 in Load Capacity 400 lb Series 315 Standards cUL Listed FM Approved UL Listed