401, 403, 403B, 443, and 443B: Locking Regulators & Quadrants for 3/8″ Square Shaft

Submittal Form


Young Regulator has a variety of locking regulators and quadrants for ⅜” square damper shafts.


See submittal form for a full list of our locking quadrants for ⅜” round damper shafts.

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