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SPANCO Aluminum Gantry Cranes have capacities up to 3 tons. Spans vary based on capacity. Up to 12 feet are available under the I-beam. The portable aluminum gantries are extremely lightweight; as low as 112 pounds! Spring-loaded steel locking pins are also featured on the aluminum gantry crane models for simplified height adjustment. Moldon polyurethane wheels with four position swivel locks provide excellent floor protection. Our aluminum gantry crane is corrosion resistant. Standard adjustable spans allow aluminum gantry to travel down narrow aisles.