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Belimo ZG NMSA 1 Shaft Extension the AFS 145 is frequently used the AFS 145 is frequently used as a combustion air proving switch to ensure blower operation before the gas valve is energized Versatile Termination: Equipped with side by side screw and quick connect terminals to streamline wire management during installation reducing labor time on the job site The Belimo ZG NMSA 1 Shaft Extension is a critical accessory for HVAC contractors performing damper actuator retrofits or new installations where existing drive shafts are too short to reach the actuator clamp
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