Shelving allows you to optimize your overhead space and keep your floors open for extra storage. Top-quality, aluminum shelving supported by 14-gauge square tube-steel with silver, powder-coated finish is durable and will last a lifetime! Uprights mount securely to wall and are zinc-plated to avoid rust. Versatile system can be configured to your specific needs, allowing you to maximize your space. Shelving quickly adjusts by hand (no tools needed) in 1" increments to maximize your space as your storage needs change. Wall fasteners not included due to the variety of surface types. Mounts on block wall and wood or metal stud walls. Spans doors and windows. Intended for indoor use; components should not be exposed to prolonged outdoor weather conditions. Easy to install and move. Includes detailed installation instructions. Bays are 4'W x 8'H and support up to 1,000 lb. Shelving is 17-1/2"D; each shelf supports up to 250 lb. Patent pending. Truck delivery.