Ducane 80W57 OEM Upgraded Furnace Air Pressure Switch -0.65" Replacement

Brand-new Ducane 80W57 — an OEM-upgraded furnace air pressure switch built to OEM quality standards. Rated at -0.65" for reliable pressure sensing in furnace systems. Premium replacement part sold as a single unit (1). Ideal when you need a direct, high-quality OEM substitute.