36"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 7.75"h] Compatible with Duct 6" this guard fits almost any

this guard fits almost any thermostat and blends seamlessly into any setting

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 24" OR 24" x 30" duct opening (measured at the opening)

and with a built-in back 1/2" mesh they also protect you from annoying rodents like mice

[Outer Dimensions: 32

36"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 7.75"h] Compatible with Duct 6" this guard fits almost any+ Product Details Size 36"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 37. 75" Width X 7. 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