Rotary Control Damper Missing Part

Nebraska, United States   

Rotary damper

I need help identifying this rotary damper control.

The worm drive is missing. It is not a Vestal.

The damper plate does not have a flange to attach the worm drive yoke.

The worm yoke/collar pushes/pulls directly on the shaft slot in the damper plate.

This fireplace dates to 1958.


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