IT Furniture IT Furniture by Mayline Frame allows for shelf adjustment in 2″ increments It was tested to hold 600lbs. per 24″/36″ frame without failure The shelves are made of thermally-fused low-pressure laminate with over 1′ thick particle board core. The shelves were tested to hold 250lbs. without failure. Quantities are limited to 5 of any model per order. The station consists of a 24″ framework, four 24 1/4″W x 20″D shelves, and one 24 1/4″W x 29 1/2″D server shelf.