14"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 17.75"h] Compatible With Duct 6in + Product Details Size –

+ Product Details Size – 20"w X 10"h is the size for the duct opening measurement only

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

Actual Front End Outer Dimensions Are 14" Width X 4" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

10"w X 6"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size - 28"w X 36"h is the size for the duct opening measurement only

14"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 17.75"h] Compatible With Duct 6in + Product Details Size –+ Product Details Size 14"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 15. 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