Portable Gantry Crane Body Material Steel Maximum Lifting Capacity 4 000 lb I-Beam Flange Width 4.7 in I-Beam Height 10 in Height Adjustability Adjustable Height Minimum Overall Height 7.2 ft Maximum Overall Height 10 ft Minimum Height Under Beam 6.3 ft Maximum Height Under Beam 9.2 ft Minimum Overall Span 12 ft Maximum Overall Span 15.5 ft Minimum Clear Span 14.5 ft Maximum Clear Span 14.4 ft Mobility Under Load Mobile Rotating Legs Yes Span Adjustability Adjustable Span