Used 41688 sq ft Forced Draft Air Fin Cooler. Manufactured by Smithco Engineering Inc. Model F39-75-4. (1) Fin Fan with (2) Bundles. Bundle (1) Amine Cooler. 676 sq ft (Bare), 14197 sq ft (Extended). 39'F/F. 316L Stainless Steel headers (50) 1.25" O.D. SS Tubes Rated 100 psi@ 240F Forced Draft Type. (4) Fans. Top Louvers. National Board #14748. Serial #2015B2222A. Bundle (2) Reflux Cooler. 1309 sq ft (Bare), 27491 sq ft (Extended). Carbon Steel Headers. (171) CS Tubes x 1" Tube O.D. 75 psi @ 255F. National Board #14749. Serial #2015B2222B.