Photo 1 of Handua 30"W x 6"H [Duct Opening Size] Steel Return Air Grille (HD Series) Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 31.75"W X 7.75"H for 30x6 Duct Opening 30"W x 6"H [Duct Opening]

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Photo 1 of Handua 30"W x 6"H [Duct Opening Size] Steel Return Air Grille (HD Series) Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 31.75"W X 7.75"H for 30x6 Duct Opening 30"W x 6"H [Duct Opening]Photo 2 of Handua 30"W x 6"H [Duct Opening Size] Steel Return Air Grille (HD Series) Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 31.75"W X 7.75"H for 30x6 Duct Opening 30"W x 6"H [Duct Opening]Photo 3 of Handua 30"W x 6"H [Duct Opening Size] Steel Return Air Grille (HD Series) Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 31.75"W X 7.75"H for 30x6 Duct Opening 30"W x 6"H [Duct Opening]