32"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 11.75"h] sidewall Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 13 3/4" x 1"

+ Product Details Size - 14"w X 12"h X 2"d (for duct opening measurement only)

Actual Filter Size – 31 3/4"w x 33 3/4" x 1"

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 8" duct openings

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32"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 11.75"h] sidewall Actual Filter Size – 29+ Product Details Size 32"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 33. 75" Width X 11. 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