24"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 9.75"h] 1-Way Heavy-gauge all-steel construction

Heavy-gauge all-steel construction

High Quality – Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control

+ Product Details Size – 20"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 8"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 21 5/8" width X 33 5/8" height

24"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 9.75"h] 1-Way Heavy-gauge all-steel construction+ Product Details Size 24"w X 8"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 9. 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