12" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover [Outer Dimensions: 14"] Brown actual front end outer dimensions

actual front end outer dimensions are approximately 27 5/8" width X 20 5/8" height

+ Product Details Size - 25"w X 4"h is the size for the duct opening measurement only

and sound level range of NC 25 to 35

or commercial environments

+ Product Details Size – 16"w X 30"h is the size for the duct opening measurement only

12" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover [Outer Dimensions: 14"] Brown actual front end outer dimensions12" Diameter Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 12" Diameter Incorporated with Integral Butterfly Damper for full Airflow Control Assembeled Before Powder Coat Paint, to Ensure Perfect Smooth Finish Commercial Grade Aluminum Will Never Rust Designed for Warehouses, Factories, Workshops, Gymnasiums & Restaurants Center Core is Removable for Easy Access and Maintence 12" Circular Round Aluminum HVAC