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 Noise free components - no Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Noise free components - no vibrating louvers etc

+ Product Details Size – 26"w X 22"h is the size for the duct opening measurement only

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actual front end outer dimensions are approximately 30 5/8" width X 36 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 10" OR 10" X 16" duct opening (measured at the opening)

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 Noise free components no Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Noise free components no vibrating louvers etc + Product Details Size – 26"w X 22"h is the size for the duct opening measurement only