32"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 29.75"h] 12" Round Duct Pipe Filter Size - 27

Filter Size - 27

actual front end outer dimensions are approximately 27 5/8" width X 28 5/8" height

+ Product Details Size - 12"w X 34"h is the size for the duct opening measurement only

+ Product Details Size – 2"w X 12"h or 12"w X 2"h is the size for the duct opening measurement only

32"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 29.75"h] 12" Round Duct Pipe Filter Size - 27+ Product Details Size 32"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 33. 75" Width X 29. 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