32"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 7.75"h] with filter + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 10" X 10" is the size for the duct opening measurement only

+ Product Details Outer dimensions: 25

+ How To Measure A Grille

this filter grille never rusts and withstands long-term use in any environment

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 14" OR 14" x 26" duct opening (measured at the opening)

32"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 33.75"w x 7.75"h] with filter + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 10" X 10" is the size for the duct opening measurement only + Product Details Outer dimensions: 25