Photo 1 of Therwen 2 Pieces 6 Inch Round Vent Cover, Ceiling Diffuser HVAC Vent Duct Cover Replacement with Screws to Install for Home Ventilation Use, Fitting in 6 Inch Duct, Outer Dimensions: 9-15/16"

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Photo 1 of Therwen 2 Pieces 6 Inch Round Vent Cover, Ceiling Diffuser HVAC Vent Duct Cover Replacement with Screws to Install for Home Ventilation Use, Fitting in 6 Inch Duct, Outer Dimensions: 9-15/16"Photo 2 of Therwen 2 Pieces 6 Inch Round Vent Cover, Ceiling Diffuser HVAC Vent Duct Cover Replacement with Screws to Install for Home Ventilation Use, Fitting in 6 Inch Duct, Outer Dimensions: 9-15/16"