12"W X 22"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 23.75"H] Powder Coated + Product Details Size - 4 X 12 Is CRFG2028 Width_14in

+ Product Details Size - 30"w X 4"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 32"h is the size for the duct opening measurement only

Design – Unrestricted airflow For Your HVAC system - noise free components - no vibrating louvers etc

no questions asked

actual front end outer dimensions are approximately 7

12"W X 22"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 13.75"W X 23.75"H] Powder Coated + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 30"w X 4"h is the size for the duct opening measurement only + Product Details Size 26"w X 32"h is the size for the duct opening measurement only