DESC: Dayton Portable Liquid Propane Heater E58 features 100,000BtuH of heating Power, and covers up to 3500 sq. ft. The E58 comes with Fuel Shut-off Device and Automatic Overheat Shut-off Protection, A 10-feet Hose and Regulator Assembly. Ideals heater for Open Air Workshops, Well-ventilated Construction Sites, Farms, Warehouses, Factories and Outdoor Uses.