8"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 29.75"h] w28h28 Filter Size - 33

Filter Size - 33

Design – Full Control Vertical/Horizontal Air flow Direction

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 30" OR 30" x 32" duct opening (measured at the opening)

Upgrade to a new standard of air quality and aesthetics with our Aluminum Ceiling Diffuser

+ Product Details Size – 10"w X 32"h is the size for the duct opening measurement only

8"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 29.75"h] w28h28 Filter Size - 33+ Product Details Size 8"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 9. 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 wear