The Deep 4-Shelf Bracket delivers superior strength, yet is compact and lightweight. The brackets provide a large amount of shelf space and stock storage without interfering with valuable floor space. The brackets are very easy to install. Simply hook them onto the shipping container D-rings and begin storing. This bracket has four tiers and uses two 2×12 construction grade wood planks per shelf providing a 22.5″ deep shelf. Two bracket units are required to make a complete shelfing system giving you a 2400 lbs (1.1 ton) load capacity. Adding an additional bracket unit increases load capacity to 3600 lbs (1.6 tons).