The Whitmor 4-Tier Shelving Unit is constructed from sturdy metal materials, making it highly durable. Each shelf can hold up to 400 lbs, with a maximum total weight capacity of 1600 lbs. Its dense mesh design and V-shaped side bars enhance both strength and load-bearing capacity. The unit comes with thickened pipes made from premium alloy steel, providing robust support, and features a durable coating to prevent rust and corrosion. With four adjustable leveling feet, it compensates for uneven floors and prevents scratches, ensuring stability and protecting your floor. The 3-tier wire shelving unit measures 18" L x 12" W x 38.2" H and is suitable for compact spaces while still holding bulkier items with ease. Its ultra-narrow spacing secures small tools, plants, or pantry jars without slipping, making cluttered corners organized. This versatile unit is ideal for various spaces such as kitchens, bathrooms, garages, and laundry rooms. Designed for tool-free assembly, it can be easily installed by aligning plastic clips with grooves on the poles and resting the shelves on the clips. Follow the simple steps to secure all tiers and meet all your storage needs.