18"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 23.75"h] Powder-Coated and 4-way configurations

and 4-way configurations

Horizontal performance assures confident use of cooling temperature differential of 30 degrees Fahrenheit and greater

5" - SEE BELOW IN DESCRIPTION How To Measure A Grille

+ Product Details Size – 10" x 34" or 34" x 10" is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 6" OR 6" x 24" duct opening (measured at the opening)

18"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 23.75"h] Powder-Coated and 4-way configurations+ Product Details Size 18"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 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