View 3 of 24x8 Return Air Grille (Duct Opening Size), Air Return Vent Cover, AC Vent Cover, Cold Air Return Vent Cover, Flat Return Air Grilles, Outer Dimensions:25.75"W x 9.75"H (24"Wx8"H, Duct Opening)

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View 1 of 24x8 Return Air Grille (Duct Opening Size), Air Return Vent Cover, AC Vent Cover, Cold Air Return Vent Cover, Flat Return Air Grilles, Outer Dimensions:25.75"W x 9.75"H (24"Wx8"H, Duct Opening)View 2 of 24x8 Return Air Grille (Duct Opening Size), Air Return Vent Cover, AC Vent Cover, Cold Air Return Vent Cover, Flat Return Air Grilles, Outer Dimensions:25.75"W x 9.75"H (24"Wx8"H, Duct Opening)View 3 of 24x8 Return Air Grille (Duct Opening Size), Air Return Vent Cover, AC Vent Cover, Cold Air Return Vent Cover, Flat Return Air Grilles, Outer Dimensions:25.75"W x 9.75"H (24"Wx8"H, Duct Opening)