Adjustable trays can be reconfigured in a wide variety of ways. Use it with any of the available shelf styles below to meet your specific storage needs. 14 gauge trays angle back towards frame to help retain contents. 6″ x 2″ phenolic casters, 2-swivel, 2-rigid. All-welded construction with Powder Coated finish. Flush shelves has a 1-1/2″ lip along the back, flush edge on 3 sides. Ideal for long and oversize items.