Made of high quality class I steel to enhance strength and finish. Double wall construction provides strength. Reinforcement corner gussets add strength and reduce racking 2" mounting centers provide flexibility in arranging drawers to individual needs. All drawers equipped with 75 pound full extension ball bearing slides with quick disconnect. All 4" and deeper drawers provide for adding additional slides to double drawer capacity.Country of Origin: USManufacturer Lifetime Warranty - subject to terms and conditions of manufactuer.