MODULAR BULK STORAGE RACK ADD-ON UNIT WITH WOOD DECKING – 4 LEVELS THIS ADD-ON UNIT INCLUDES 2 T-POSTS TO MAKE EXPANSION EASY AND JOIN UNITS WITH MORE STABILITY AND LESS CONSTRUCTION THAN BOLTING 2 STARTER UNITS TOGETHER. BOLTLESS DESIGN SNAPS TOGETHER SECURELY WITHOUT TOOLS OR HARDWARE. OPEN DESIGN ALLOWS ACCESS FROM ALL SIDES. ROLL FORMED 14 GAUGE STEEL UPRIGHTS ENSURE RIGIDITY. LEVELS INCLUDE RUGGED 5/8″ THICK PARTICLEBOARD DECKING AND ADJUST AT 1-1/2″ INCREMENTS WITHOUT DISASSEMBLY. SCRATCH RESISTANT ENAMEL FINISH. INCLUDES 2 UPRIGHT T-POSTS, 4 SETS OF HORIZONTAL BEAMS AND PARTICLEBOARD DECKING.