ProSource 310-ORG2505W Boltless Shelving Unit with Particle Boards, 4000 lb, 5-Shelf, 48 in OAW, 24 in OAD, 72 in OAHHeavy duty shelving unit has a 4000 lb weight capacity and 3 8 in particle board. Constructed with industrial strength 16 gauge posts. Boltless design, no nuts, bolts, or shelf clips. Can be assembled as one 72 in tall unit or two 36 in workbenches. Unit: EA UPC: 812486023301 Model Number: 310 ORG2505W