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always verify the internal mounting dimensions and center port clearance before attempting to cross-reference with other manufacturers
maintaining original system efficiencies and safety certifications without the need for field modifications
this switch is "normally closed" and should show near-zero resistance
Key Benefits for Technicans: Field-Serviceable Design: Complete internal rebuild kit specifically for 1/2 inch Apollo vacuum breakers
Johnson Controls KNB26A-600R Knob always verify the internal mountingThe 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