Used approx 30 sq. ft. vertical shell & tube heat exchanger, Mfg. by Monticello. 304L stainless steel shell rated for 150 PSI @ 450 Deg. F., 316L stainless steel tubes rated for 150 psi @ 450 Deg. F. Shell diameter 8.625" OD x 66" OAL. (42)3/4" Dia tubes. TEMA C, BEM 8-48. Nozzles: Shell (2) 2", Tubes 2" in, 6" out.Serial #T101805C, National Board #5010, Year Built: 1990. Previous Service: Reboiler Distillate Grignard, Estimated Weight: 600#