Available with center offset casters to allow easier movement over thresholdsFrames are made from 18-gauge steel with 1" square tubing; shelves are 20-gauge steel. Six welded beams in lower frame provide added strength. Silencer mats under every shelf provide whisper-quiet performance. Extended curved handles for comfort. Rubber bumpers at bottom of frame prevent accidental damage to furniture. Features 4 tiers of flat shelves.Includes 5" ball bearing swivel casters for easy mobility; available with 4 swivel and 2 rigid offset casters, allowing a pivot and rocking action for easy movement over thresholds, or with 6 swivel (no offset) casters. Ships via Truck. FOB: ILAvailable with platinum baked enamel finish only.Overall dimensions: 53H x 37W x 16"DShelf depth: 16"Shelf clearance (first and middle): 12"Shelf clearance (bottom): 10 3/4"