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 Fixed Height Minimum Overall Height Not Applicable Maximum Overall Height 13.3 ft Minimum Height Under Beam Not Applicable Maximum Height Under Beam 12 ft Minimum Overall Span Not Applicable Maximum Overall Span 21.6 ft Minimum Clear Span 18.6 ft Maximum Clear Span 18.5 ft Mobility Under Load Mobile Rotating Legs No