Butterfly Damper Calculator

Use this calculator to determine opening area of the damper.

This page exists due to the efforts of the following people:

Pete Mazz

Created: 2015-04-02 12:04:40, Last updated: 2020-11-03 14:19:32
Creative Commons Attribution/Share-Alike License 3.0 (Unported)

This content is licensed under Creative Commons Attribution/Share-Alike License 3.0 (Unported). That means you may freely redistribute or modify this content under the same license conditions and must attribute the original author by placing a hyperlink from your site to this work https://planetcalc.com/4596/. Also, please do not modify any references to the original work (if any) contained in this content.

Butterfly Damper 1.jpg

PLANETCALC, Butterfly Damper

Butterfly Damper

Number of openings in the damper.
Measure from the center of the cover to the outer edge of the opening.
Measure the circular center section of the damper.
Measure across the widest part of the opening.
Opening Area
Opening %

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PLANETCALC, Butterfly Damper Calculator