26"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 25.75"h] Fixed Blades with Damper + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 14" OR 14" X 16" duct opening (measured at the opening)

For example

of up to 300m3/h

+ Product Details Size - 30"w X 20"h is the size for the duct opening measurement only

+ Product Details Size - 6"w X 34"h is the size for the duct opening measurement only

26"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 25.75"h] Fixed Blades with Damper + Product Details Perfect Fit+ Product Details Size 26"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 27. 75" Width X 25. 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