18"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 33.75"h] Outdoor Vent Covers Actual Filter Size – 19

Actual Filter Size – 19 3/4"w x 9 3/4" x 1"

+ Product Details Size - The listed 10" diameter refers specifically to the size of the duct opening

+ Product Details Size - 36"w X 26"h is the size for the duct opening measurement only

Actual Filter Size – 24 3/4"w x 13 3/4" x 1"

actual front end outer dimensions are approximately 10 5/8" width X 30 5/8" height

18"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 33.75"h] Outdoor Vent Covers Actual Filter Size – 19+ Product Details Size 18"w X 32"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 75" Width X 33. 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