20"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 21.75"w x 27.75"h] w30h30 Actual Front End Outer Dimensions

Actual Front End Outer Dimensions Are 16" Width X 6" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

Actual Filter Size – 35 3/4"w x 33 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 32" OR 32" x 36" duct opening (measured at the opening)

+ Product Details Size - 22"w X 28"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 32 5/8" width X 38 5/8" height

20"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 21.75"w x 27.75"h] w30h30 Actual Front End Outer Dimensions+ Product Details Size 20"w X 26"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 21. 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