Portable Gantry Crane Body Material Steel Maximum Lifting Capacity 6 000 lb I-Beam Flange Width 5 in I-Beam Height 12 in Height Adjustability Adjustable Height Minimum Overall Height 9 ft Maximum Overall Height 14 ft Minimum Height Under Beam 8 ft Maximum Height Under Beam 13 ft Minimum Overall Span 13 ft Maximum Overall Span 17.5 ft Minimum Clear Span 15.5 ft Maximum Clear Span 15.4 ft Mobility Under Load Mobile Rotating Legs Yes Span Adjustability Adjustable Span