factory-set to trigger at 4-8 PSI on rising or falling pressure

leak-proof interface with the inducer housing or collector box

Smith 100173792 Arm Assembly is a critical OEM component designed for high-efficiency burner management in commercial and residential gas-fired systems

this I/O control board manages the interface between system sensors and actuators

2-inch lead length

Trane WHL0503 Wheel 328140-751 factory-set to trigger at 4-8The Trane WHL0503 Blower Wheel is a precision engineered 10x8 CW Steel Wheel specifically designed for high static pressure environments in HVAC blower assemblies. This OEM Trane replacement wheel features a 1 2 inch bore and is constructed from heavy duty galvanized steel to ensure dynamic balance and vibration free operation at high RPMs. As a direct replacement for discontinued part numbers including Trane WHL00503, it maintains critical airflow