BOLTLESS SHELF SINGLE RIVET – WOOD DECK BOLTLESS SHELF ALLOWS EASY ACCESS TO STORED ITEMS FROM ALL SIDES. PARTICLEBOARD WOOD DECKING IS SUPPORTED BY DURABLE STEEL BEAMS THAT ADJUST AT 1-1/2″ INCREMENTS. BAKED ENAMEL FINISH. INCLUDES 2 CROSS SHELF BEAMS AND 2 SIDE SUPPORT BEAMS FOR RIGIDITY. INCLUDES 5/8″ THICK PARTICLEBOARD WOOD DECK. RIVET BEAMS ALLOW EASY, TOOL FREE SHELF INSTALLATION. .