20"W X 24"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 21.75"W X 25.75"H] w10h10 designed for both sidewall and 4 X 12 Is CRFG2028 Width_14in

designed for both sidewall and ceiling installations

Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment

+ Product Details Size – 30"w X 12"h is the size for the duct opening measurement only

/* Darker color for better readability */ } ul { margin-bottom: 15px

+ Product Details Size - 36"w X 30"h is the size for the duct opening measurement only

20"W X 24"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 21.75"W X 25.75"H] w10h10 designed for both sidewall and 4 X 12 Is CRFG2028 Width_14in designed for both sidewall and ceiling installations Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment