34"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 7.75"h] Color_R-4.2 Yellow + Product Details Size –

+ Product Details Size – 10" x 32" or 32" x 10" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 36 5/8" width X 38 5/8" height

75"H – fits a 20" X 20" duct opening

but you will appreciate the benefits over the period of time

34"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 7.75"h] Color_R-4.2 Yellow + Product Details Size –+ Product Details Size 34"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 7. 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