Product Descriptions Fitment 632444 Pressure Switch commonly used on gas furnaces. Suitable for Nordyne/ for Intertherm/ for Miller/ for Gibson / for Frigidaire / for Westinghouse / for Philco / for Tappan and other brand gas furnaces. Widely applicable 632444 pressure switch for 90% gas furnaces. (Please refer to the picture for the specific model) Keep Your Furnace Stays Safe 632444 pressure switch will close when the combustion/booster motor is running to create negative air pressure, or when the draft inducer fan motor reaches maximum speed, so that the gas does not enter the furnace. Prevent harmful gas leakage. .
