Safco - Industrial 6 Steel Shelf Pack in Dark Gray Finish (18 in.) - Choose Depth: 18 in.. 6 Shelves. Made of steel. 725 lbs. shelf capacity. Assembly required. 36 in. W x 12 in. D x 85 in. H (35 lbs.). 36 in. W x 18 in. D x 85 in. H (48 lbs.). 36 in. W x 24 in. D x 85 in. H (68 lbs.)Strong arm the competition. The box beam shelf design and double-sided compression clips support loads up to 725 lbs. per shelf (based on a 36&quot;W x 12&quot;D shelf evenly loaded). Shelves lock in place but can be easily repositioned in one-inch increments. Six shelves per shelf pack. Post Kit includes four 85&quot; high posts (must be ordered with each Shelf Pack) Features corner brakets which help prevent rocking and improve overall stability and rigidity. A hat channel under every shelf increases overall strength.