12"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 15.75"h] 10" Round Duct Pipe + Product Details Size –

+ Product Details Size – 10"w X 8"h is the size for the duct opening measurement only

+ Product Details Size - 25"w X 24"h is the size for the duct opening measurement only

vibration-free performance

Premium Airflow Efficiency - High-performance cube core eggcrate design allows 95% airflow efficiency

This versatile diffuser is adaptable to various airflow needs

12"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 15.75"h] 10" Round Duct Pipe + Product Details Size –+ Product Details Size 12"w X 14"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 15. 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