6"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 29.75"h] Ceiling + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 10"w X 10"h is the size for the duct opening measurement only

Noise free components - no vibrating louvers etc

Transform your space's exterior with our reliable and stylish louvers today

+ Product Details Size – 8" x 32" or 32" x 8" is the size for the duct opening measurement only

+ Product Details Size - 26"w X 14"h X 2"d (for duct opening measurement only)

6"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 7.75"w x 29.75"h] Ceiling + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 10"w X 10"h is the size for the duct opening measurement only Noise free components no vibrating louvers etc