32"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 7.75"h] Powder Coated padding: 20px

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 18" OR 18" x 30" duct opening (measured at the opening)

Actual Filter Size – 15 3/4"w x 25 3/4" x 1"

Refrigerant - 1/2" White Insulation - 50' Long

Its generous size and universal design ensure a perfect fit for a wide range of thermostat models

32"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 7.75"h] Powder Coated padding: 20px+ Product Details Size 32"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 33. 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