36"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 37.875"W X 9.875"H] 14in diameter rattle free airflow for your 4 X 12 Is CRFG2028 Width_14in
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36"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 37.875"W X 9.875"H] 14in diameter rattle free airflow for your 4 X 12 Is CRFG2028 Width_14in rattle free airflow for your air conditioning and heating system as well as smooth opening and closing back dampers providing comfort and control