40000 Lb./Hr. Cleaver Brooks Watertube Boiler Model: NB200D40 375 PSI MAWP Year 2011. Fuel: Natural Gas; Burner: CB NatCom Low NOx with Rated Input of 48.3 Million BTU/HR. Includes One (1) Kentube Economizer; One (1) Fan: 50 HP – 1800 rpm – Premium Efficiency; Main Boiler Control Panel; Steam Water and Natural Gas Flow Transmitters; Structural Steel Access Ladder and Catwalk; Economizer Structural Steel Support Stand and Transition Duct. Boiler has been Hydrotested and is listed as Refurbished. Available Immediately Spring 2019.