10" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover [Outer Dimensions: 12"] 1-Way Actual Filter Size – 9

Actual Filter Size – 9 3/4"w x 9 3/4" x 1"

+ Product Details Size - 16"w X 32"h is the size for the duct opening measurement only

expanding or retracting the gap to meet your precise needs

Constructed from high-impact

+ Product Details Size - 20"w X 22"h X 2"d (for duct opening measurement only)

10" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover [Outer Dimensions: 12"] 1-Way Actual Filter Size – 910" Diameter Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 10" 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 10" Circular Round Aluminum HVAC