Portable Gantry Crane Body Material Steel Maximum Lifting Capacity 16 000 lb I-Beam Flange Width 7.1 in I-Beam Height 16.4 in Height Adjustability Fixed Height Minimum Overall Height Not Applicable Maximum Overall Height 17.4 ft Minimum Height Under Beam Not Applicable Maximum Height Under Beam 16 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