TENNSCO Bulk Racks with Particleboard Decking are the economical choice for heavy-duty applications. Sturdy storage racks feature pre-welded uprights and roll formed steel box beams for added strength at shelves’ front and rear edges. Each shelf level features a plywood beam reinforced with a plywood support angle to hold particleboard decking securely in place. Beams lock quickly and safely to uprights via unique tapered finger attachments—units assemble in half the time of similar competitor models. Shelves adjust in 2" increments. Starters can be used individually or combined with add-on units to complete a row of shelving. Standard units include 3 shelf levels; extra levels available. Made in USA.