14"W X 28"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 15.75"W X 29.75"H] w12h12 + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 32"w X 34"h is the size for the duct opening measurement only

+ Product Details Size - 16"w X 34"h is the size for the duct opening measurement only

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

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+ Product Details Size - 22"w X 10"h is the size for the duct opening measurement only

14"W X 28"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 15.75"W X 29.75"H] w12h12 + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 32"w X 34"h is the size for the duct opening measurement only + Product Details Size 16"w X 34"h is the size for the duct opening measurement only