28"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 23.75"h] Return actual front end outer dimensions

actual front end outer dimensions are approximately 41

is fireproof and ensures efficient thermal performance

Actual Front End Outer Dimensions Are 12" Width X 4" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

+ Product Details Size - 6"w X 8"h X 2"d (for duct opening measurement only)

Heavier gauge than needed

28"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 23.75"h] Return actual front end outer dimensions+ Product Details Size 28"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 23. 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