104106-03 Pressure Switch Kit-0.60"

This is a high altitude pressure switch that is designed to be used with the BG921 series of furnaces when installed between 4501-7500 feet above sea level. 

If you are installaing a BG921 series furnace that is using natural gas between 4501-7500 feet above sea level then simply order this pressure switch. 

If you are installing a BG921 series furnace that is using propane between 4501-7500 feet above sea level then make sure to order this pressure switch and the LP conversion kit BG11K50

This high altitude pressure switch is also designed to be used on the 45000 input btu BG951 and BG961 series of furnaces when installed between 7501-10000 feet above sea level.

If you are installing a BG951 or BG961, 45000 input btu furnace between 7501-10000 feet above sea level and are using natural gas then make sure to order this pressure switch and the high altitude, natural gas, orifice kit B51W01.

If you are installing a BG951 or BG961, 45000 input btu furnace between 7501-10000 feet above sea level and are using propane then make sure to order this pressure switch and the high altitude, LP conversion kit BG11K45.