used
Engineered Air HE321/O M-TRAC4 Industrial Direct Fired Air Heater. Natural Gas, 32000CFM, 540RPM, 575V, 60HZ, 3PH, 60A, 25HP. Maxitrol Selectra MR212G Negative Pressure Modulator Regulator Valve, 5PSI, 10000CFH, 2"-5" W.C.
