30"W X 26"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 27.75"H] fixed bar The design eliminates noise and Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

The design eliminates noise and prevents louvers from vibrating

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

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+ Product Details Size – 24"w X 8"h is the size for the duct opening measurement only

scratch-resistant

30"W X 26"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 31.75"W X 27.75"H] fixed bar The design eliminates noise and Compatible With Duct 7in Applications This sheet metal DDAG A 1212 The design eliminates noise and prevents louvers from vibrating + Product Details Size 22"w X 22"h is the size for the duct opening measurement only