18"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 27.75"h] 18" Diameter See our separate listing of 4 X 12 Is CRFG2028 Width_14in

See our separate listing of T-Bar Supply Grilles

+ Product Details Outer dimensions: – fits a duct opening

actual front end outer dimensions are approximately 24 5/8" width X 22 5/8" height

+ Product Details Size - 14"w X 12"h is the size for the duct opening measurement only

This aluminum adjustable louvered garage vent allows air ventilation and circulation in your garage 24 hours a day

18"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 19.75"w x 27.75"h] 18" Diameter See our separate listing of 4 X 12 Is CRFG2028 Width_14in See our separate listing of T Bar Supply Grilles + Product Details Outer dimensions: – fits a duct opening