6"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 23.75"h] ceiling Actual Filter Size – 15

Actual Filter Size – 15 3/4"w x 17 3/4" x 1"

+ Product Details Size – 24"w X 16"h is the size for the duct opening measurement only

Measure the size of the air duct/drywall opening

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 28" OR 28" x 32" duct opening (measured at the opening)

6"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 23.75"h] ceiling Actual Filter Size – 15+ Product Details Size 6"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 7. 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 wear