Portable Gantry Crane Body Material Steel Maximum Lifting Capacity 4 000 lb I-Beam Flange Width 4 in I-Beam Height 8 in Height Adjustability Adjustable Height Minimum Overall Height 10.2 ft Maximum Overall Height 16 ft Minimum Height Under Beam 9.5 ft Maximum Height Under Beam 15.3 ft Minimum Overall Span 8 ft Maximum Overall Span 11.5 ft Minimum Clear Span 10.5 ft Maximum Clear Span 10.4 ft Mobility Under Load Mobile Rotating Legs Yes Span Adjustability Adjustable Span