14"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 15.75"W X 21.75"H] Return Grille + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 6" x 12" or 12" x 6" is the size for the duct opening measurement only

+ Product Details Size - 12"w X 10"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 30"h is the size for the duct opening measurement only

this piece is the perfect touch of class you need to add to your decor

14"W X 20"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 15.75"W X 21.75"H] Return Grille + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 6" x 12" or 12" x 6" is the size for the duct opening measurement only + Product Details Size 12"w X 10"h is the size for the duct opening measurement only