16"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 17.75"w x 9.75"h] Return Grille actual front end outer dimensions

actual front end outer dimensions are approximately 38 5/8" width X 36 5/8" height

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 32" OR 32" x 24" duct opening (measured at the opening)

+ Product Details Size - 26"w X 24"h X 2"d (for duct opening measurement only)

+ Product Details Size - 36"w X 4"h is the size for the duct opening measurement only

16"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 17.75"w x 9.75"h] Return Grille actual front end outer dimensions+ Product Details Size 16"w X 8"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 9. 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