BOLTLESS WIDE SPAN STORAGE RACK WITHOUT DECKING PROVIDES EXTRA SPACE FOR BULKY MATERIALS. BOLTLESS ASSEMBLY WITH SNAP TOGETHER COMPONENTS REQUIRES NO NUTS, BOLTS, CLIPS OR TOOLS. UPRIGHTS ARE A SUBSTANTIAL 1-1/2″ X 1-1/2″ X 14 GAUGE STEEL. UNIT INCLUDES 3 LEVELS, ADJUSTABLE AT 1-1/2″ INCREMENTS. HEAVY-DUTY ROLL-FORMED STEEL FRAMING WITH CHIP RESISTANT GRAY BAKED ENAMEL FINISH. ALL MODELS HAVE DOUBLE RIVETED BEAMS FOR MAXIMUM FRAME RIGIDITY. SUPPLY YOUR OWN DECKING.