A combination of high- and low-tension 6″ springs suspend the 16″ x 30″ bed within a 36″ x 48″ frame. Elevation adjustments within a 12″-15″ range can be quickly and securely made using handle tighteners and release pins. Approach legs offer two lock-in adjustments at heights of 7″ and 4″. All legs fold flat for easy storage. Assembly required.