22"W X 36"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 23.75"W X 37.75"H] Aluminum - Cube Core + Product Details Size - Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size - 12"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 32"h is the size for the duct opening measurement only

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+ Product Details Size – 10"w X 6"h is the size for the duct opening measurement only

+ Product Spec Sheet Aluminum Return Grille Spec Sheet

22"W X 36"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 23.75"W X 37.75"H] Aluminum Cube Core + Product Details Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size 12"w X 28"h is the size for the duct opening measurement only + Product Details Size 30"w X 32"h is the size for the duct opening measurement only