16"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 17.25"W x 5.25"H] 10in diameter + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 18"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 32"h X 2"d (for duct opening measurement only)

Actual Front End Outer Dimensions Are 25

QUALITY PACKAGING & SATISFACTION GUARANTEED- Quality Packaging - Carefully Packaged in Corrugated Box To Prevent Damage In Shipment - Hand Inspected for Quality - 100% Satisfaction Guaranteed

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16"W X 6"H [Duct Opening] Linear Aluminum Clip On Bar Return Air Grille [Outer Dimensions: 17.25"W x 5.25"H] 10in diameter + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 18"w X 16"h is the size for the duct opening measurement only + Product Details Size 18"w X 32"h X 2"d (for duct opening measurement only)