34"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 23.75"h] d Actual Filter Size – 24

Actual Filter Size – 24 3/4"w x 33 3/4" x 1"

+ Product Details Size - 16"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 16 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 28" or 28" x 12" duct opening (measured at the opening)

34"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 23.75"h] d Actual Filter Size – 24+ Product Details Size 34"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 23. 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