18"W X 16"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 19.75"W X 17.75"H] Powder-Coated Some of the best features 4 X 12 Is CRFG2028 Width_14in

Some of the best features aren't readily apparent

+ Product Details Size – 10" X 2" is the size for the duct opening (floor/vent hole) measurement only

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+ Product Details Size - 24"w X 18"h is the size for the duct opening measurement only

This grille has a high standard of design

18"W X 16"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 19.75"W X 17.75"H] Powder Coated Some of the best features 4 X 12 Is CRFG2028 Width_14in Some of the best features aren't readily apparent + Product Details Size – 10" X 2" is the size for the duct opening (floor vent hole) measurement only