30"W X 26"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 27.75"H] fixed bar + Product Details Size – 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size – 30"w X 10"h is the size for the duct opening measurement only

scratch-resistant

+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

that will overlap at wall joint

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

30"W X 26"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 31.75"W X 27.75"H] fixed bar + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 30"w X 10"h is the size for the duct opening measurement only scratch resistant