Photo 1 of Fits 16x10 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 17.75"W X 11.75"H (16" W x 10" H Duct Opening)

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Photo 1 of Fits 16x10 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 17.75"W X 11.75"H (16" W x 10" H Duct Opening)Photo 2 of Fits 16x10 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 17.75"W X 11.75"H (16" W x 10" H Duct Opening)