22"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 23.75"h] w12h12 + Product Details Size –

+ Product Details Size – 16"w X 26"h is the size for the duct opening measurement only

Actual Filter Size – 13 3/4"w x 7 3/4" x 1"

designed for both sidewall and ceiling installations

Actual Front End Outer Dimensions Are 12" Width X 6" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

12" Diameter Is The Size For The Duct Opening Measurement Only

22"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 23.75"h] w12h12 + Product Details Size –+ Product Details Size 22"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 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