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What is the ``solid red`` only knob that can be used on the 9001KR9R or 9001SKR9R push-pull operator?

Issue:
Is there a part number for a solid red knob used on our push pull operators?

Product Line:
Harmony Push Button

Environment:
Harmony 30mm

Resolution:
The 9001R20 (1-3/8`` red mushroom) or the 9001R21 (2-1/4`` red mushroom) can be used for ``solid red`` buttons only.
When used on 9001KR9R or 9001SRK9R operators, 9001R20 and 9001R21 mushroom knobs must be used in conjunction with adapter ring 9001K54 which is available for the purpose at no charge.``)