Pallet Rack Add-On Unit with Wire Mesh DeckingPallet Rack Add On Units with Wire Mesh Decking come with one pre assembled upright, 4 beams and 4 wire decks (2 decks per level). Our heavy duty pallet rack features 3" x 3" columns. Constructed from 14 gauge steel, our uprights offer a maximum capacity of 20,867 lbs. (based on a maximum shelf spacing of 48"). The new bolt together design provides a lower cost of ownership because components can be easily replaced when damaged during use, while