104371-02 SWITCH - PRESSURE .60 (replaces 11J09)

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 BG921-LPHAK 1 which includes this pressure switch and the matching LP conversion kit (BG11K50)

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

If you are installing a BG961, 45000 input btu furnace between 7501-10000 feet above sea level and are using natural gas then make sure to order BG961-NGHAK 1 which includes this pressure switch and High altitude orifice kit B51W01.

If you are installing a BG961, 45000 input btu furnace between 7501-10000 feet above sea level and are using propane then make sure to order BG961-LPHAK 4 which includes this pressure switch and high altitude LP conversion kit BG11K45.