10"W X 6"H [Duct Opening] Never Rust Plastic 3-Way-Vertical Air Supply Register - HVAC Vent Duct Grille - Off White [Outer Dimensions: 11.75"W X 7.75"H] w16h16 + Product Description Introducing the 4 X 12 Is CRFG2028 Width_14in

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

+ Product Details Size – 25"w X 10"h is the size for the duct opening measurement only

the second number represents the height

32" x 8" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply

our grill boasts an impressive 96% airflow capacity

10"W X 6"H [Duct Opening] Never Rust Plastic 3 Way Vertical Air Supply Register HVAC Vent Duct Grille Off White [Outer Dimensions: 11.75"W X 7.75"H] w16h16 + Product Description Introducing the 4 X 12 Is CRFG2028 Width_14in + Product Description Introducing the 3 coned supply grille for a T bar lay in + Product Details Size – 25"w X 10"h is the size for the duct opening measurement only