Photo 1 of 16" X 16" Steel Return Air Grilles - Sidewall and Ceiling - HVAC Duct Cover - Black [Outer Dimensions: 17.75" w X 17.75" h] 16 X 16 Black

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Photo 1 of 16" X 16" Steel Return Air Grilles - Sidewall and Ceiling - HVAC Duct Cover - Black [Outer Dimensions: 17.75" w X 17.75" h] 16 X 16 BlackPhoto 2 of 16" X 16" Steel Return Air Grilles - Sidewall and Ceiling - HVAC Duct Cover - Black [Outer Dimensions: 17.75" w X 17.75" h] 16 X 16 Black