Heavy duty uprights make Pallet Rack Shelving from BuyRack able to stand up to the toughest applications in commercial and industrial settings. Uprights come pre-assembled for all starter and add-on units. With 3" x 3" columns and 5" x 8" seismic base plates this is the industrial bulk shelving you need. A new bolt together design provides a lower cost of ownership because components can be easily replaced when damaged during use, while traditional welded uprights require replacement of the entire upright. This industrial shelving is perfect for storing large, odd shaped and/or heavy items.