24"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 15.75"h] w25h25 Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 11 3/4" x 1"

Filter Size - 20

Actual Filter Size – 33 3/4"w x 23 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 10" or 10" x 6" duct opening (measured at the opening)

Actual Filter Size – 31 3/4"w x 33 3/4" x 1"

24"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 15.75"h] w25h25 Actual Filter Size – 33+ Product Details Size 24"w X 14"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 15. 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