HDX 4-Shelf Plastic Ventilated Storage Shelving Unit (Black) for $19.88. Order online for in-store pickup at Home Depot to lock in the price and save on shipping. Otherwise, shipping is $10 for a total of $29.88 shipped. Here is a screenshot for your reference. Each shelf has up to 125 lb.weight capacity and measures 36″W x 18″D x 55″H.