Trolley Trolley Type Push Maximum Load Capacity 16 000 lb Trolley Frame Material Steel For Beam Shape Flat Tapered For Minimum Beam Flange Width 5 1/2 in For Maximum Beam Flange Width 8 21/32 in Headroom to Connecting Shaft 11 3/8 in Headroom to Mounting Point 4 5/8 in For Minimum Beam Height 6 in For Maximum Beam Height 6 in Includes Not Applicable Minimum Radius Curve 118 1/8 in Trolley Wheel Diameter 6 9/10 in Trolley Wheel Material Steel Manufacturer s Warranty Length 2 yr