18"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 27.75"h] White Design – Rigid gauge built

Design – Rigid gauge built for durability and long life in mind

+ Product Details Size – 6"w X 14"h is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 19 3/4" x 1"

actual front end outer dimensions are approximately 12 5/8" width X 22 5/8" height

18"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 27.75"h] White Design – Rigid gauge built+ Product Details Size 18"w X 26"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 75" Width X 27. 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