Constructed from durable steel withi a spring deck and split-frame design. Built in gear box, 3-motor design, and universal bed ends allow for easy assembly. Casters easily adjust from standard-height range (12.8″ – 20.5″) to low-height range (9.8″ – 17″). Durable,, composite plastic boards are both impact-resistant and scratch-resistant. Easy-access port for manual crank. Weight capacity 450 lb.