Reddy Heater R115 Portable Kerosene Forced Air Heater. 115,000 BTU. Heats 50' x 54' 8' Area (2,700 Sq Ft.). Runs Up To 10 1/2 Hours On Full 9-Gallon Tank. Instant Heat Right Out Of The Box—Just Fill Tank And Plug In! Quickly Circulates Heat With High-Capacity Fan. Operates In Extremely Cold Temperatures. Flame Out Control System Shuts Heater Down In The Event Of Loss Of Flame Or Lack Of Fuel. Uses Low-Cost Kerosene, #1/#2 Diesel Fuel & Fuel Oil, JP-8 Fuel or Jet A Fuel. Exclusive Patented Hot Surface Ignition (HSI) Provides Quieter Operation, Cleaner Burning And Less Maintenance.