36"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 25.75"h] Brown + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 20" or 20" x 12" duct opening (measured at the opening)

Designed to seamlessly integrate with T-Bar vent covers in drop ceiling setups

these louvers are built to last

+ Product Spec Sheet

Actual Filter Size – 27 3/4"w x 9 3/4" x 1"

36"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 25.75"h] Brown + Product Details Perfect Fit+ Product Details Size 36"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 37. 75" Width X 25. 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