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 Fixed Height Minimum Overall Height Not Applicable Maximum Overall Height 13 ft Minimum Height Under Beam Not Applicable Maximum Height Under Beam 12 ft Minimum Overall Span 13 ft Maximum Overall Span 17.5 ft Minimum Clear Span 15.3 ft Maximum Clear Span 15.3 ft Mobility Under Load Mobile Rotating Legs No Span Adjustability Adjustable Span