12" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover [Outer Dimensions: 14"] Compatible With Duct 8in this grille offers durability and

this grille offers durability and resistance to rust and corrosion

+ Product Details Size - 36"w X 14"h is the size for the duct opening measurement only

Horizontal performance assures confident use of cooling temperature differential of 30 degrees Fahrenheit and greater

rated at R3

+ Product Details Size – 10" x 22" or 22" x 10" 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"] Compatible With Duct 8in this grille offers durability and12" 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