30"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 29.75"h] with filter actual front end outer dimensions

actual front end outer dimensions are approximately 10 5/8" width X 30 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 30" OR 30" x 28" duct opening (measured at the opening)

actual front end outer dimensions are approximately 36 5/8" width X 34 5/8" height

High Quality – high quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

+ Product Details Size – 22" x 28" or 28" x 22" is the size for the duct opening measurement only

30"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 29.75"h] with filter actual front end outer dimensions+ Product Details Size 30"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 31. 75" Width X 29. 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