Quick Adjust Trolley Trolley Type Push Maximum Load Capacity 4 000 lb Trolley Frame Material Steel For Beam Shape Flat Tapered For Minimum Beam Flange Width 3 in For Maximum Beam Flange Width 8 9/32 in Headroom to Connecting Shaft 2 5/32 in Headroom to Mounting Point 7 7/32 in For Minimum Beam Height 3 9/16 in For Maximum Beam Height Not Applicable Includes Not Applicable Minimum Radius Curve 3 5/8 in Trolley Wheel Diameter 5 in Trolley Wheel Material Steel