24"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 17.75"h] Aluminum Bar + Product Details Size –

+ Product Details Size – 12" x 22" or 22" x 12" is the size for the duct opening measurement only

Design – Cubic core eggcrate design Offers highest airflow efficiency at almost 95%

+ Product Details Size - 26"w X 32"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height -

75" width X 31

24"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 17.75"h] Aluminum Bar + Product Details Size –+ Product Details Size 24"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 17. 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