34"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 31.75"h] Ceiling + Product Details Size –

+ Product Details Size – 26"w X 18"h is the size for the duct opening measurement only

The grille comes with all necessary screws for a secure fit

actual front end outer dimensions are approximately 36 5/8" width X 28 5/8" height

[Outer Dimensions: 12

+ Product Details Size – 30"w X 16"h is the size for the duct opening measurement only

34"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 31.75"h] Ceiling + Product Details Size –+ Product Details Size 34"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 31. 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