18"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 35.75"h] 3-Way or 4-Way this easy-to-install grille fits seamlessly

this easy-to-install grille fits seamlessly into any standard return filter opening

Featuring a multi-shutter damper with an easy-access lever

Actual Filter Size – 33 3/4"w x 23 3/4" x 1"

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

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

18"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 35.75"h] 3-Way or 4-Way this easy-to-install grille fits seamlessly+ Product Details Size 18"w X 34"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 75" Width X 35. 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