The XE and RT series of indirect fired heaters offer atmospheric burners for both indoor (XE series) and outdoor (RT series) installation. Standard features include cabinet, supply blower, heat exchanger, burner, built in draft diverter, controls, air filter, belt drive, motor and factory pre-wiring (Outdoor units include Spark Ignition) and offering heat input ranges from 65 to 320 MBH. Make up air units or units with a high percentage of outside air are manufactured with stainless steel heat exchangers.