10"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 23.75"h] Floor Grille + Product Details Size -

+ Product Details Size - 28"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are 32" width X 10" height

Experience hassle-free installation and full adjustability for optimal airflow

+ Product Details Size – 10"w X 18"h is the size for the duct opening measurement only

+ Product Details Size – 16" x 18" or 18" x 16" is the size for the duct opening measurement only

10"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 23.75"h] Floor Grille + Product Details Size -+ Product Details Size 10"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 23. 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