While it may appear similar to cartridges used in the WM97+ or Taco 00 series

For applications requiring an external sensing line

utilizing variable speed capabilities to optimize air movement and system static pressure

such as pipe wrenches and a mallet to break the gasket seal

Installation Ready: Features a 7/8 inch keyed shaft for secure blower wheel attachment and reliable torque transfer

Lennox 80W57 Pressure Switch 340793-762 While it may appear similarThe Lennox 80W57 Pressure Switch is a critical safety component designed for single stage gas furnaces. This genuine OEM Lennox furnace pressure switch is calibrated to actuate at . 65" WC (water column), ensuring that the combustion air inducer motor is generating sufficient negative pressure before the ignition sequence begins. Engineered with a single pole single throw (SPST) configuration and Normally Open (N. O.) contacts, this switch protects