34"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 19.75"h] Material_Aluminum + Product Details Size –

+ Product Details Size – 24" x 34" or 34" x 24" is the size for the duct opening measurement only

+ Product Details Size - 6"w X 16"h X 2"d (for duct opening measurement only)

+ Product Details Size - 6"w X 26"h X 2"d (for duct opening measurement only)

+ Product Details Size – 8" x 26" or 26" x 8" is the size for the duct opening measurement only

+ Product Details Size – 12" x 30" or 30" x 12" is the size for the duct opening measurement only

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