HIGH CAPACITY BOLTLESS RACK WITH WOOD DECKING ADD-ON UNIT HORIZONTAL BEAMS ARE ROLL-FORMED TO A Z-PROFILE FOR ADDED SHELF CAPACITY. DECKING SITS FLUSH TO BEAMS FOR NEATER APPEARANCE AND STABILITY. 2-1/4″ X 1-1/2″ X 14-GAUGE UPRIGHTS. BOLTLESS, INTERLOCKING BEAMS WITH DOUBLE TEARDROP POSTHOLES ASSEMBLE QUICKLY AND WITHOUT TOOLS. LEVELS ADJUST AT 1-1/2″ INCREMENTS. INCLUDES STURDY, PRECUT 5/8″ PARTICLEBOARD, AN ECONOMICAL CHOICE FOR DECKING. TAN BAKED ENAMEL FINISH. THIS ADD-ON UNIT INCLUDES 2 T-POSTS, BEAMS FOR 3 LEVELS AND DECKING.