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] Compatible With Duct 6in + Product Details Size -

+ Product Details Size - 34"w X 24"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 4"h is the size for the duct opening measurement only

+ Product Details Size – 22" x 30" or 30" x 22" is the size for the duct opening measurement only

Versatility and Durability: The red oak wood not only adds a touch of warmth and softness to your room but can also be sanded and refinished according to your specific application needs

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] Compatible With Duct 6in + Product Details Size -+ 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