16"W X 25"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 17.75"W X 26.75"H] Copper Coil-Insulated Line Set + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 22"w X 32"h is the size for the duct opening measurement only

+ Product Details Size - 6"w X 28"h is the size for the duct opening measurement only

improves airflow

High Quality – High-quality

+ Product Details Size - 34"w X 30"h is the size for the duct opening measurement only

16"W X 25"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 17.75"W X 26.75"H] Copper Coil Insulated Line Set + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 22"w X 32"h is the size for the duct opening measurement only + Product Details Size 6"w X 28"h is the size for the duct opening measurement only