Photo 1 of Duct Opening | Steel Return Air Grille For Sidewall And Ceiling 17 3/4 x 14 in.

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Photo 1 of Duct Opening | Steel Return Air Grille For Sidewall And Ceiling 17 3/4 x 14 in. Photo 2 of Duct Opening | Steel Return Air Grille For Sidewall And Ceiling 17 3/4 x 14 in. Photo 3 of Duct Opening | Steel Return Air Grille For Sidewall And Ceiling 17 3/4 x 14 in. Photo 4 of Duct Opening | Steel Return Air Grille For Sidewall And Ceiling 17 3/4 x 14 in.