This 5 shelf storage rack is a must have in any garage! Stay organized with this heavy duty steel shelf. Sturdy solid steel construction with particle board shelves is designed to hold 250-Pound per shelf. The adjustable shelves allow you to customize the unit to your storage needs. Black powder coat finish is corrosion resistant. Made of solid steel and particle board. Manufacturer provided limited lifetime warranty. Assembly level/Degree of difficulty: Easy. Rapid Rack Industries, Inc has been providing the industrial and commercial industry with the highest quality material storage solutions for over half a century. As Rapid Rack became a leader of storage solutions, we recognized the need for the same type of high quality product in the retail marketplace, thus, Gorilla Rack Product line was formed in 1988. Gorilla Rack has developed a wide variety of storage solution products. You can be confident when purchasing a Gorilla Rack Product, you are buying a high quality product that will meet or exceed your expectations. In addition, Gorilla Rack has created the first rating system that actually gives consumers safe shelf load capacities called "Family Safe" rating. Since there is no industry wide standard, Gorilla Rack has establish a "safe" rating to use throughout it"s product line. This rating clearly informs consumers and associates what is the safe weight load to store on the racks.