26"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 11.75"h] with filter + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 20" OR 20" x 26" duct opening (measured at the opening)

6" width X 9

Actual Filter Size – 7 3/4"w x 29 3/4" x 1"

+ Product Details Size - 10"w X 6"h X 2"d (for duct opening measurement only)

+Product Details Size – 2"h x 12"w is the size for the duct opening measurement only

26"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 11.75"h] with filter + Product Details Perfect Fit+ Product Details Size 26"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 27. 75" Width X 11. 75" Height Weather and Pest Proof These louvers are especially designed to prevent water from entering your home, and with a built in back 1 2" mesh they also protect you from annoying rodents like mice, rats, birds, and squirrels High Quality Aluminum The premium durable aluminum will never rust and it will never