Photo 1 of Handua 16"W x 10"H [Duct Opening Size] Steel Return Air Grille | Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 17.75"W X 11.75"H for 16x10 Duct Opening 16"W x 10"H [Duct Opening]

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Photo 1 of Handua 16"W x 10"H [Duct Opening Size] Steel Return Air Grille | Vent Cover Grill for Sidewall and Ceiling, White | Outer Dimensions: 17.75"W X 11.75"H for 16x10 Duct Opening 16"W x 10"H [Duct Opening]