26"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 17.75"h] Fixed Blades with Damper 75"H – fits a 16"

75"H – fits a 16" X 6" duct opening

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 8" Or 8" x 34" duct opening (measured at the opening)

Actual Filter Size – 29 3/4"w x 13 3/4" x 1"

actual front end outer dimensions are approximately 12 5/8" width X 20 5/8" height

+ Product Details Size - 34"w X 32"h is the size for the duct opening measurement only

26"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 17.75"h] Fixed Blades with Damper 75"H – fits a 16"+ Product Details Size 26"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 27. 75" Width X 17. 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