10"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 29.75"h] Color_Red Oak Wood actual front end outer dimensions

actual front end outer dimensions are approximately 30 5/8" width X 10 5/8" height

and then smoothly drop in the grill

+ Product Details Size - 30"w X 12"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 32"h is the size for the duct opening measurement only

14" Diameter Is The Size For The Duct Opening Measurement Only

10"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 29.75"h] Color_Red Oak Wood actual front end outer dimensions+ Product Details Size 10"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 29. 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