ORDERING NOTE: The Hart & Cooley 16 series 12" round ceiling diffuser is specifically made to cover a 12" hole in the ceiling. The overall outside diameter of the grille is: 15-15/16" (with three holes for mounting)

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ORDERING NOTE: The Hart & Cooley 16 series 12" round ceiling diffuser is specifically made to cover a 12" hole in the ceiling. The overall outside diameter of the grille is: 15-15/16" (with three holes for mounting)

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