- 2001' to 4000' above sea level - P501771
- 4001' to 6000' above sea level - P501802
- 6001' to 8000' above sea level - P501782
- Product Type:
- High Altitude Conversion Kit
Please refer to the appropriate section for your specific furnace.
Please call Williams Furnace Technical Support at 888-444-1212 to confirm the correct part required for your specific furnace needs. You will need the model and the serial number of your specific furnace.