Height is adjustable every 3" from 48" to 66". Uprights and hangrail are made of 1/2 x 1-1/2" rectangular tubing and has a protective chrome strip on the ring. Adjustable levelers and rubber-tipped shelf supports are included. Can be used with casters. Welded construction. Use our 2" (240290) casters. Bolted construction. This rack does not rotate. Folds for easy shipping and storage.