6"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 27.75"h] 2-Way Actual Filter Size – 19

Actual Filter Size – 19 3/4"w x 15 3/4" x 1"

[Outer Dimensions: 16

+ Product Details Size - 10"w X 28"h is the size for the duct opening measurement only

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

+ Product Details Size – 14"w X 10"h is the size for the duct opening measurement only

6"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 27.75"h] 2-Way Actual Filter Size – 19+ Product Details Size 6"w X 26"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 7. 75" Width X 27. 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