30"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 11.75"h] w14h14 + Product Description Improve your 4 X 12 Is CRFG2028 Width_14in
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Description
30"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 31.75"w x 11.75"h] w14h14 + Product Description Improve your 4 X 12 Is CRFG2028 Width_14in + Product Description Improve your HVAC system with our high quality + Product Details Size – 22"w X 18"h is the size for the duct opening measurement only