Each kit comes with four Heavy Duty shelves and four posts Holds up to one ton (2,000 lbs) of evenly distributed weight per shelf Constructed of aluminum tubing welded internally to rectangular frame Shelf has 4 lattices approx. Not enough storage? See the18"d H.D. Aluminum Shelffor additional shelves. If you are looking for a different height, please call our friendly, helpful sales staff at 1.800.637.9508. Note: Solid Brute, T-bar, and H.D. shelves of equal sizes may be used together on a single shelving unit. Call us to order customized metal shelving kits at no additional cost!