HVAC Premium Round Quadrant - Volume Damper | Round Damper Ring | 8" Galvanized Steel Metal Round Duct Ring is Compatible with Duct 8" Flat Oval- Vertical Elbow Transition + Product Details Size –

+ Product Details Size – Sheet metal duct board take off start collar is 6" and it is compatible with duct 6"

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actual front end outer dimensions are approximately 26 5/8" width X 26 5/8" height

The Contempo Decorative Grate

We carry sizes the big box stores don't

HVAC Premium Round Quadrant - Volume Damper | Round Damper Ring | 8" Galvanized Steel Metal Round Duct Ring is Compatible with Duct 8" Flat Oval- Vertical Elbow Transition + Product Details Size –+ Product Details Size & Compatibility The 8" round quadrant volume damper is compatible with duct 8" Superior Quality Made in the USA. Our manual adjuster damper quadrant is made of high quality galvanized sheet metal with crimped ends (snap lock design) for easy fitting and secure connection Applications This circular volume control damper plate is used to stops or regulates the flow of air inside a duct, chimney, vav box, air handler, or other air