This is 4 tier wire shelf,all the shelf is can adjust height .The shelving unit is made of steel wire shelving.The weight limit for each shelf is 250 pounds, and the total weight limit for the entire shelf is 1000 pounds. The storage shelves provide an enormous amount of space for you and no occupy too much space.You can use this wire shelving in the kitchen bedroom garage and more. Tools, books,and other things can be placed on this wire shelving. Feature Easy to assemble, no tools needed. Improve addition space, no occupy too much space. Adjustable wire shelving,Easy to store things. Sturdy metal construction,can withstand heavy objects. Brand new and high quality. The surface of the garment rack is black paint plated. Works Anywhere,suitable for bedroom, cloakroom, laundry room,store clothing, shoes, socks, bags Rack storage shelves wire shelf wire shelving unit rack storage shelves shelving wire shelf shelving unit wire shelving metal shelf metal rack storage shelf metal shelves wire rack garage shelving Metal Shelving wire shelves heavy duty shelving rack shelf white shelving unit Storage Rack metal.