This is 6 tier wire shelf, you only need to spend 15min to install it. This Heavy Duty 6-Shelf Metal Storage Rack Shelving Unit with Casters is made of steel wire shelving. Maximum weight capacity per shelf is 220lbs when equally distributed on feet levelers. Maximum entire unit weight capacity is 500lbs when equally distributed on casters. You can use the feet levelers or wheels to suit your needs. The storage rack provide an enormous amount of space for you. You can use this wire shelving in the kitchen bedroom garage. Heavy Duty 6-Shelf Metal Storage Rack Shelving Unit with Casters Brand new and high quality Easy to assemble, no tools needed Create addition space, no occupy too much space Sturdy metal construction,can withstand heavy objects Wire shelf surface is an anti-corrosion coating Immovably or Portability,use the feet levelers or wheels to suit your needs Adjustable, The shelves can be placed higher or lower in 1-inch increments Easy to store things Multi-functional, suitable for bathroom kitchen garage and more Tools, books, clothes, bag and other things can be placed on it Dimensions: 48"L x 18"W x 72"H Shipping Weight: 68lbs.