30"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 27.75"h] Color_White Actual Filter Size – 24

Actual Filter Size – 24 3/4"w x 25 3/4" x 1"

Actual Filter Size – 35 3/4"w x 23 3/4" x 1"

Filter Size - 21

Install 2 Vents

Universal Fit – Measures 3-7/8" wide x 3-1/2" high x 3" deep

30"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 27.75"h] Color_White Actual Filter Size – 24+ Product Details Size 30"w X 26"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 31. 75" Width X 27. 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