14"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 35.75"h] Color_R-4.2 Yellow + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 24"w X 12"h is the size for the duct opening measurement only

+ Product Details Size – 28"w X 10"h is the size for the duct opening measurement only

The total outer size of this grille is the listed size plus 2

+ Product Details Size - 12"w X 28"h X 2"d (for duct opening measurement only)

screws same color as vent cover

14"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 15.75"w x 35.75"h] Color_R 4.2 Yellow + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 24"w X 12"h is the size for the duct opening measurement only + Product Details Size – 28"w X 10"h is the size for the duct opening measurement only