28"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 17.75"h] Insulated Line Set actual front end outer dimensions

actual front end outer dimensions are approximately 32 5/8" width X 20 5/8" height -

Slots are angled to diversify the airflow in 2 way direction

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 16" or 16" x 8" duct opening (measured at the opening)

+ Product Details Size - 10"w X 8"h is the size for the duct opening measurement only

Actual Filter Size – 25 3/4"w x 9 3/4" x 1"

28"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 17.75"h] Insulated Line Set actual front end outer dimensions+ Product Details Size 28"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 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