Quantum Wire Shelving 5-shelf Starter Units Storage Rack Proform 18" x 30" x 54" This wire shelving style is ideally suited for wet or moist environments as the shelving finish contains an antimicrobial agent that will not allow the build up of bacteria. This NSF approved shelving system has a 15 year warranty against rust or corrosion. Finish: Proform. Shelf Dimensions: 18"W x 30"L Out Dimensions: 18" x 30" x 54" Load Capacity: 800 lbs.