22"W X 22"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 23.75"W X 23.75"H] Insulated Line + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 24"w X 34"h is the size for the duct opening measurement only

+ Product Details Size - 28"w X 8"h is the size for the duct opening measurement only

height: 22px

Pressure Rating: 2100 to 7000 PSI

+ Product Details Size – 14"w X 12"h is the size for the duct opening measurement only

22"W X 22"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 23.75"W X 23.75"H] Insulated Line + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 24"w X 34"h is the size for the duct opening measurement only + Product Details Size 28"w X 8"h is the size for the duct opening measurement only