10"W X 28"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 11.75"W X 29.75"H] flat stamped steel offering a shiny 4 X 12 Is CRFG2028 Width_14in

offering a shiny

+ Product Details Size - 22"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 6"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 20"w X 34"h is the size for the duct opening measurement only

+ Product Details Size - 20"w X 36"h is the size for the duct opening measurement only

10"W X 28"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 11.75"W X 29.75"H] flat stamped steel offering a shiny 4 X 12 Is CRFG2028 Width_14in offering a shiny + Product Details Size 22"w X 36"h is the size for the duct opening measurement only