Used 10'6" Diameter x 69' Tall 304L Stainless Steel Tray Column. Manufactured by Nooter. Rated 135 PSI@ 200F.(35) Bubble Cap and Coil 304L Stainless Steel trays. Tray spacing: Lower (15) @1'1" and Upper (20) @2'5.25". Overall height 89'. 9'6" Skirt Mounted. National Board #12325. Serial #913417. Built 1992. Past Use Nitric Acid Absorber Column.