28"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 15.75"h] Brown + Product Details Size -

+ Product Details Size - 16"w X 20"h X 2"d (for duct opening measurement only)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 22" OR 22" x 20" duct opening (measured at the opening)

actual front end outer dimensions are approximately 4

actual front end outer dimensions are approximately 32 5/8" width X 36 5/8" height

This grille is ideal for both sidewall and ceiling installations

28"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 15.75"h] Brown + Product Details Size -+ Product Details Size 28"w X 14"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 15. 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