14" x 14" - 2-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w12h12 + Product Details Size -

+ Product Details Size - 8"w X 22"h is the size for the duct opening measurement only

+ Product Description Introducing the 3-coned supply grille for a T-bar lay-in

+ Product Details Size – 8"w X 20"h is the size for the duct opening measurement only

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14" x 14" - 2-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w12h12 + Product Details Size -+ Product Details Size 14" X 14" is the size for the duct opening measurement only, actual front end outer dimensions are 3". Design Equipped with lever for full airflow control; back blades made of black plastic for reduced air noise and discreet appearance; "Opposing" back blades, ensuring they don't overlap, provide precise damper control and superior air dispersion. High Quality Aluminum The premium durable aluminum will never rust and it will