ADDITIONAL WOOD DECKING FOR BOLTLESS WIDE SPAN STORAGE RACK INCLUDES STURDY 5/8″ THICK PRECUT PARTICLEBOARD DECKING AND HORIZONTAL BEAMS FOR ALL FOUR SIDES OF DECKING. THIS 72″W DECKING WITH 900 LB. CAPACITY ALSO INCLUDES 1 CENTER DECK SUPPORT. BOLTLESS ASSEMBLY WITH SNAP TOGETHER COMPONENTS REQUIRES NO NUTS, BOLTS, CLIPS OR TOOLS.