Portable Gantry Crane Body Material Steel Maximum Lifting Capacity 10 000 lb I-Beam Flange Width 5.5 in I-Beam Height 15 in Height Adjustability Adjustable Height Minimum Overall Height 6.2 ft Maximum Overall Height 9 ft Minimum Height Under Beam 4.9 ft Maximum Height Under Beam 7.8 ft Minimum Overall Span Not Applicable Maximum Overall Span 21.3 ft Minimum Clear Span 19.5 ft Maximum Clear Span 19.4 ft Mobility Under Load Mobile Rotating Legs Yes Span Adjustability Fixed Span