Fermostock Shelving Unit Expansion Kit, 4-tier, 71''H, 42''W x 22''D, 800 lbs. max weight per shelf, includes (1) upright, -40 to 140 F (-40 to 60 C) operating temperature range, adjustable composite feet, tool free assembly, removable polymer inserts (dishwasher safe to 212 F), 20 micron deep anodized aluminum, NSF (Made in France)