If you are looking to turn your garage or barn into a work space you can use year-round, this 50,000 BTU natural gas unit heater is the way to go. It heats up to 1,250 sq. ft. using a built-in electric high velocity fan to pull cool air into the rear of the heater, across a heat exchanger, then forcing warm air into the surrounding areas. It only requires 115v AC power and can be vented vertically or horizontally (please check local codes and restrictions). Installation is a cinch with a mounting clearance of only 1 inch, supplied brackets, external access to power, and thermostat connections. It features a Durable Spark ignition and factory standard self-diagnostic control module making operation a breeze. A minimum 8 ft clearance from floor to base of heater and ½ in. gas connection are required. A natural gas to liquid propane conversion kit is included.