This A.O. Smith Furnace Heater is designed for use with natural gas and features an outlet switch for easy control. With a brand name you can trust, this furnace heater is perfect for anyone in need of reliable heating equipment. The fuse type is a switch and the country/region of manufacture is unknown. It falls under the category of Business & Industrial, Electrical Equipment & Supplies, Switches, and Pressure Switches. This product is new and ready for use.