Made of high-quality thickened cold-rolled steel with anti-rust coating, holds up to 3000 pounds. Multipurpose Garage Storage Shelving Units. Size suitable for garage, pantry, closet, basement, office, kitchen, supermarket, warehouse. The 4 tier metal shelves expand storage space, making home or commercial space clean and orderly. Durable and Sturdy. Reinforced stable side beams evenly distribute weight, upright columns securely fastened with high-quality screws for solid connection. Adjustable Garage Storage Shelving Unit. Customize your own space with adjustable connectors. Height of each layer adjustable by moving crossbar up or down to meet different heights of varied objects. Easy Assembly and Quick Response. 4-Tier garage storage shelves come with screwdriver, gloves and detailed user manual for fast assembly.Weight: 4.85 pounds. Length: 19.60 inch. Width: 41.30 inch. Height: 78.70 inch.