Portable Cranes, Mini Cranes for Sale, Small Lift Cranes, Floor Crane, Roofing Hoist, Smart-Rig® Cranes, New/Used, 21 ft. Height. Rated 2,000 lbs. Pick and Carry Materials. Rooftop Construction Mobile Hoist. Industrial Lifting and Hoisting Equipment. Electric or Battery Power. ISO Certified. Narrow Design. Fits through Doors. Great for Tight Space.