8"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 9.75"w x 9.75"h] fixed bar [Outer Dimensions: 50 4 X 12 Is CRFG2028 Width_14in

[Outer Dimensions: 50

+ Product Details Size - 6"w X 6"h is the size for the duct opening measurement only

6"w X 6"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size - 30"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 28"w X 34"h is the size for the duct opening measurement only

8"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh White [Outer Dimensions 9.75"w x 9.75"h] fixed bar [Outer Dimensions: 50 4 X 12 Is CRFG2028 Width_14in [Outer Dimensions: 50 + Product Details Size 6"w X 6"h is the size for the duct opening measurement only