14"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 21.75"h] 8in diameter + Product Details Size – 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
14"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 15.75"w x 21.75"h] 8in diameter + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 18" x 20" or 20" x 18" is the size for the duct opening measurement only + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 10" OR 10" X 16" duct opening (measured at the opening)