12"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 25.75"h] w28h28 + Product Details Size –

+ Product Details Size – 29"w X 22"h is the size for the duct opening measurement only

Design – Premium plated finish and modern contemporary design forming a luxurious piece

Actual Front End Outer Dimensions Are 5

at predicted low air motion 35 fpm in the zone of occupancy

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

12"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 25.75"h] w28h28 + Product Details Size –+ Product Details Size 12"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 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