Quantity Damper Illustration In the example previously mentioned the volume damper controls the amount of air that air distribution diffuser CD-6 gets, In such a case it indicates 500 CFM (cubic ft for every moment) I ponder When the builder and the sparky he utilized all wore stetsons - from https://louissiwly.blogscribble.com/36810555/the-ultimate-guide-to-round-conduit