10"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 19.75"h] w12h12 Designed with two mounting base 4 X 12 Is CRFG2028 Width_14in

Designed with two mounting base options—solid and ring—it offers flexible installation

Engineered with precision and designed to perfection

and waste gases transmission lines

+ Product Details Size – 18" x 22" or 22" x 18" is the size for the duct opening measurement only

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10"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 11.75"w x 19.75"h] w12h12 Designed with two mounting base 4 X 12 Is CRFG2028 Width_14in Designed with two mounting base options—solid and ring—it offers flexible installation Engineered with precision and designed to perfection