Rivetwell Boltless Shelving with Particleboard Deck from Hallowell offers sturdy storage space for all of your materials. The boltless, steel frame snaps together quickly and makes it easy to add extra shelves later. Double-rivet beams ensure the shelves won't wobble or tip. The industrial-grade particleboard deck holds up to years of wear and tear. Create a row of shelving by attaching adder units to a starter unit. Adder units have only one front post and won’t stand alone, so you’ll need to order a starter unit for each row of shelving. Choose from many sizes.