10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 11.75"w x 11.75"h] 14" Diameter 16"w X 3"h Is The

16"w X 3"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 20" x 26 or 26" x 20" is the size for the duct opening measurement only

3 * insulation density is 30kgs/cbm = 0

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10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 11.75"w x 11.75"h] 14" Diameter 16"w X 3"h Is The+ Product Details Size 10"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 11. 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