Liberty Boiler and Mechanical Services vertical mild steel retort, serial number 36868, CRN R3533.2, 50 PSI at 350 degrees maximum working pressure, -20 degrees at 50 PSI minimum allowable working temperature, bottom mounted steam sparge, top mounted bolt locking and counter balanced lid, 36" diameter x 36" total basket depth, 2 each 32" diameter x 18" deep baskets, 1 each 32" diameter x 31-1/2" deep baskets, 2 each basket dollies included, mild steel construction.