Photo 1 of Therwen 2 Set 6 Inch Round Vent Cover Ceiling Diffuser HVAC Vent Duct Cover Replacement with Steel Butterfly Damper Fitting in 6 Inch Duct, Outer Dimensions: 9-15/16"

Double tap image to zoom

Photo 1 of Therwen 2 Set 6 Inch Round Vent Cover Ceiling Diffuser HVAC Vent Duct Cover Replacement with Steel Butterfly Damper Fitting in 6 Inch Duct, Outer Dimensions: 9-15/16"Photo 2 of Therwen 2 Set 6 Inch Round Vent Cover Ceiling Diffuser HVAC Vent Duct Cover Replacement with Steel Butterfly Damper Fitting in 6 Inch Duct, Outer Dimensions: 9-15/16"