20"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - White [Outer Dimensions 21.75"w x 21.75"h] w8h8 Crafted from solid stamped steel 4 X 12 Is CRFG2028 Width_14in

Crafted from solid stamped steel

+ Product Details Size – 32"w X 6"h is the size for the duct opening measurement only

Insulation density is 30kgs/cbm = 0

32" x 8" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply

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20"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh White [Outer Dimensions 21.75"w x 21.75"h] w8h8 Crafted from solid stamped steel 4 X 12 Is CRFG2028 Width_14in Crafted from solid stamped steel + Product Details Size – 32"w X 6"h is the size for the duct opening measurement only