24"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 17.75"h] Color_Black Actual Filter Size – 35

Actual Filter Size – 35 3/4"w x 25 3/4" x 1"

Experience enhanced indoor comfort with our 6" Butterfly Damper

Size - 10"w X 10"h is the size for the duct opening measurement only

Actual Filter Size – 33 3/4"w x 7 3/4" x 1"

24"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 17.75"h] Color_Black Actual Filter Size – 35+ Product Details Size 24"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 17. 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