Johnson Controls KNB26A-600R Knob As an OEM furnace replacement

As an OEM furnace replacement part

Designed to create an airtight seal between the draft inducer blower assembly and the heat exchanger collector box

this switch is "normally closed" and should show near-zero resistance

Is this rod compatible with other actuator brands

maintaining original system efficiencies and safety certifications without the need for field modifications

Johnson Controls KNB26A-600R Knob As an OEM furnace replacementThe Johnson Controls KNB26A 600R is a field replaceable thermostat adjustment knob specifically engineered for Penn T26, W43, and W45 series controls. This HVAC replacement part is essential for restoring precise setpoint control on heavy duty line voltage thermostats and humidistats equipped with plastic covers. Built from durable, high impact plastic, the KNB26A 600R knob assembly includes the integrated trim disc, ensuring a flush fit and