8"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 9.75"w x 17.75"h] white Made of High Quality Aluminum 4 X 12 Is CRFG2028 Width_14in

Made of High Quality Aluminum That Will Never Rust

+ Product Details Size - 6"w X 36"h X 2"d (for duct opening measurement only)

this air vent diffuser is built to last

+ Product Details Size – 14" x 24" or 24" x 14" is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 36" OR 36" X 14" duct opening (measured at the opening)

8"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh Black [Outer Dimensions 9.75"w x 17.75"h] white Made of High Quality Aluminum 4 X 12 Is CRFG2028 Width_14in Made of High Quality Aluminum That Will Never Rust + Product Details Size 6"w X 36"h X 2"d (for duct opening measurement only)