Photo 1 of 10x10 Vent Cover (Duct Opening Size), Air Return Vent Cover, AC Vent Cover, Cold Air Return Vent Cover, Flat Return Air Grilles, Outer Dimensions:11.75"W x 11.75"H (10"Wx10"H, Duct Opening)

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Photo 1 of 10x10 Vent Cover (Duct Opening Size), Air Return Vent Cover, AC Vent Cover, Cold Air Return Vent Cover, Flat Return Air Grilles, Outer Dimensions:11.75"W x 11.75"H (10"Wx10"H, Duct Opening)Photo 2 of 10x10 Vent Cover (Duct Opening Size), Air Return Vent Cover, AC Vent Cover, Cold Air Return Vent Cover, Flat Return Air Grilles, Outer Dimensions:11.75"W x 11.75"H (10"Wx10"H, Duct Opening)