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 High diffusion induction rates result

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

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

Width vs Height:

gymnasiums & restaurants

Design – Removable face for cleaning and access to damper - wooden damper for airflow shutoff control

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 High diffusion induction rates result+ 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