Williams 35,000 BTU Top Vent Liquid Propane Gas Room Furnace High Altitude Conversion Kit

The high-altitude kit for the Williams 3501521A room heater contains the necessary orifices for converting this room heater to function in elevations up to 1000 ft. Room heaters come rated for 0 to 2,000 ft. This kit will allow you to change the orifices for safe functioning at higher altitudes.|Contains the necessary components required for converting a standard room heater to work in elevations that are between 2000 ft. and 8000 ft.|Designed for use with the Williams gas wall heater|Easy-to-follow instructions|3-orifice sizes included