25"W X 14"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 26.75"W X 15.75"H] w6h6 which the interior PET provides Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

which the interior PET provides

+ Product Details Size - 12"w X 32"h is the size for the duct opening measurement only

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+ Product Details Size - 28"w X 4"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 26"h is the size for the duct opening measurement only

25"W X 14"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 26.75"W X 15.75"H] w6h6 which the interior PET provides Compatible With Duct 7in Applications This sheet metal DDAG A 1212 which the interior PET provides + Product Details Size 12"w X 32"h is the size for the duct opening measurement only