28"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 35.75"h] Powder-Coated + Product Details Size -

+ Product Details Size - 25"w X 20"h is the size for the duct opening measurement only

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actual front end outer dimensions are approximately 34 5/8" width X 27 5/8" height -

+ Product Details Size – 12" X 2" is the size for the duct opening (floor/vent hole) measurement only

+ Product Details Size - 14"w X 14"h Is The Size For The Duct Opening Only

28"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 35.75"h] Powder-Coated + Product Details Size -+ Product Details Size 28"w X 34"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 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