This is a Brand New OEM Upgraded Source1 Furnace Air Pressure Switch. Source1 is the OEM source for all parts used in York, Coleman, and Luxaire HVAC equipment. The TriDelta Model # is FS6349-525 and tt is rated at -0.63" W/C with Two Hoses and Three Wiring terminals.
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.
FS6349-525