12"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 13.75"w x 13.75"h] w28h28 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 12" OR 12" x 22" duct opening (measured at the opening)

+ Product Details Size - 34"w X 26"h X 2"d (for duct opening measurement only)

Carefully Shrink Wrapped – With cardboard backing to prevent damage in shipment

High Quality – High-quality steel with counter-sunk screw holes (screws included) and no sharp edges

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

12"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 13.75"w x 13.75"h] w28h28 + Product Details Perfect Fit+ Product Details Size 12"w X 12"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 13. 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