14"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 15.75"w x 15.75"h] 14" Round Duct Pipe Actual Filter Size – 15

Actual Filter Size – 15 3/4"w x 15 3/4" x 1"

The ring base allows installation without removing the thermostat

providing a stylish and practical solution for ventilation

Actual Filter Size – 9 3/4"w x 17 3/4" x 1"

+ Product Details Size - 12"w X 6"h is the size for the duct opening measurement only

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