Woot offers Nordyne 632451 Pressure Switch for $18.99 (orig. $34.83). Free shipping for Prime Members.
Product Features:
This is a Brand New OEM Furnace Air Pressure Switch
Part # 632451; -0.9"WC
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.
