Vestil Single/Dual Sided Bar Stock TreesStarter unit includes two uprights and one set of cross braces. Storage room is increased when the add on unit is ordered. Add on unit consists of one upright and one set of cross braces for joining to the starter set. Capacity is 500 pounds per arm. Distance between levels is 10". There are 7 storage levels. Choose either single sided or double sided steel racks. Each upright requires four (4) anchor bolts, sold separately. Painted finish. Single