22"W X 6"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 23.75"W X 7.75"H] Insulated Line Set actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are 11

+ Product Details Size - 20"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 16"w X 20"h is the size for the duct opening measurement only

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+ Product Details Size - 20"w X 10"h is the size for the duct opening measurement only

22"W X 6"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 23.75"W X 7.75"H] Insulated Line Set actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are 11 + Product Details Size 20"w X 24"h is the size for the duct opening measurement only