Blueridge 11U70 104371-07 SWITCH - PRESSURE (this replaces 11J11)

This is a high altitude pressure switch for the 90000 input btu BG951 and BG961 series furnaces when installed between 4501-7500 feet above sea level.

If you are using natural gas and installing a 90000 input btu BG951 or BG961, series furnace at 4501-7500 feet in altitude then simply use this pressure switch.

If you are using propane and installing a 90000 input btu BG951 or BG961, series furnace at 4501-7500 feet in altitude then use BG9(5/6)1-LPHAK 2 which includes this pressure switch and LP conversion kit BG11K50.