Plano 924400 4-Shelf Solid Shelving Unit (White) for $18.45. Select in-store pickup at Walmart to save on shipping. Otherwise, shipping is $4.97 for a total of $23.42 shipped, or free on orders over $45. Here is a screenshot for your reference. The shelving unit is made of heavy-duty plastic, holds 100 lbs. per shelf, and measures 30″W x 14″D x 56″H.