32"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 21.75"h] White controlled by a switch

controlled by a switch

+ Product Details Size – 28"w X 34"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 34" x 28" Or 28" x 34" duct opening (measured at the opening)

+ Product Details Size – 8"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 34"w X 26"h is the size for the duct opening measurement only

32"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 21.75"h] White controlled by a switch+ Product Details Size 32"w X 20"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 33. 75" Width X 21. 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