View 2 of 24 x 24 inch Vent Duct Cover Aluminum Cube Core Eggcrate Return Air Grille HVAC. Ceiling or Sidewall Grille. White. for 1" Filter. Duct Hole Must Measure 24 x 24

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View 1 of 24 x 24 inch Vent Duct Cover Aluminum Cube Core Eggcrate Return Air Grille HVAC. Ceiling or Sidewall Grille. White. for 1" Filter. Duct Hole Must Measure 24 x 24View 2 of 24 x 24 inch Vent Duct Cover Aluminum Cube Core Eggcrate Return Air Grille HVAC. Ceiling or Sidewall Grille. White. for 1" Filter. Duct Hole Must Measure 24 x 24