16"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 23.75"h] w36h36 Foot Operated Opposed Blade Damper

Foot Operated Opposed Blade Damper For Full Air Flow Control And Shutoff

Actual Filter Size – 21 3/4"w x 23 3/4" x 1"

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 6" duct openings

actual front end outer dimensions are approximately 5

+ Product Details Size - 22"w X 30"h X 2"d (for duct opening measurement only)

16"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 23.75"h] w36h36 Foot Operated Opposed Blade Damper+ Product Details Size 16"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 23. 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