Used 40,000 lbs/hr Heat Recovery Steam Generator (HRSG) boiler with economizer mfg. by Energy Recovery Inc. Model #S3-1816 w/ economizer. HRSG design pressure 200 psig, operating pressure 100 psig, feedwater temp 228 F, Total Boiler Heating surface area 13,570 Sq Ft, 288 tubes x 2" OD. Unit comes with a Davis 16.6 million BTUH natural gas fired duct burner. Serial #w-2929, NB #2804, Built 1992.