This is a BRAND NEW Gas Furnace Air Pressure Switch. It is designed to replace the old Honeywell Part #s listed below. The pressure rating is 2.03" W/C (with an OP rating of 2.25" WC). It has two wiring terminals and two hose ports. This listing is for the switch only no bracket. You will need to use your old bracket or find another way of mounting it.
An air switch is safety designed to ensure that your inducer motor is running at the proper RPM, and creating the proper vacuum for your furnace to flue safely.
IS20144-3335