24"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 25.75"w x 37.75"h] Filter Grille Airflow Control – Adjustable airflow

Airflow Control – Adjustable airflow lever allows precise control over the direction and volume of air

actual front end outer dimensions are approximately 18 5/8" width X 32 5/8" height

+ Product Details Size - 26"w X 16"h is the size for the duct opening measurement only

The included eight-tumbler lock and supplied key provide secure access

this thermostat guard combines dependable security with a professional and attractive appearance

24"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 25.75"w x 37.75"h] Filter Grille Airflow Control – Adjustable airflow+ Product Details Size 24"w X 36"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 37. 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