20"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 21.75"w x 33.75"h] Access Door + Product Details Size –

+ Product Details Size – 10"w X 3"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 24 5/8" width X 38 5/8" height

10" x 8" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

+ Product Details Size - 30"w X 36"h is the size for the duct opening measurement only

Some of the best features aren't readily apparent

20"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 21.75"w x 33.75"h] Access Door + Product Details Size –+ Product Details Size 20"w X 32"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 21. 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