6"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 37.75"h] 2-Way Actual Filter Size – 33

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

Actual Filter Size – 11 3/4"w x 11 3/4" x 1"

It comes with two versatile mounting base options—solid and ring—making installation simple and flexible

actual front end outer dimensions are 19" Width X 19" Height

+ Product Details Size - 22"w X 32"h is the size for the duct opening measurement only

6"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 37.75"h] 2-Way Actual Filter Size – 33+ Product Details Size 6"w X 36"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 7. 75" Width X 37. 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 wear