These Performax™ shelving units are easy to assemble with no tools required. They provide versatile use for any garage, basement, utility room, laundry room, and more. The shelves will not rust, stain, peel, or dent. Each shelf can hold 230 pounds, evenly distributed, with a total capacity of 1,150 pounds per shelf unit. More shelf height options are available with the easy slide and lock design, which allows for easy customization of shelf levels to maximize storage. With an easily portable and lightweight design, this unit is great anywhere you need organization!