28"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 17.75"h] flat stamped steel Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 27 3/4" x 1"

actual front end outer dimensions are approximately 34 5/8" width X 14 5/8" height

+ Product Details Size – 24" x 28" or 28" x 24" is the size for the duct opening measurement only

installation is a breeze

High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

28"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 17.75"h] flat stamped steel Actual Filter Size – 25+ Product Details Size 28"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 17. 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