8"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 25.75"h] Grille Actual Filter Size – 11

Actual Filter Size – 11 3/4"w x 5 3/4" x 1"

+ Product Details Size – 32"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 28 5/8" height

our damper helps create a well-balanced indoor environment

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

8"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 25.75"h] Grille Actual Filter Size – 11+ Product Details Size 8"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 9. 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 wear