12" [Duct Opening] Round Ceiling Diffuser - Easy Air Flow - HVAC Vent Duct Cover [Black] - [Total Outer Dimensions: 16"] w20h20 Powder-Coat Finish – smooth Suitable for all AC 8in diameter 12125SDCLNGBX

Powder-Coat Finish – smooth

actual front end outer dimensions are approximately 24 5/8" width X 10 5/8" height

Rigid Built For External Use – The sturdy and rigid design features noise-free components that eliminate vibration and excess noise to the louvers

+ Product Details Size – 40"w X 10"h is the size for the duct opening measurement only

12" [Duct Opening] Round Ceiling Diffuser Easy Air Flow HVAC Vent Duct Cover [Black] [Total Outer Dimensions: 16"] w20h20 Powder Coat Finish – smooth Suitable for all AC 8in diameter 12125SDCLNGBX Powder Coat Finish – smooth actual front end outer dimensions are approximately 24 5 8" width X 10 5 8" height