Speedi-Grille AC-BTD 08 8-Inch Round Bow Tie Radial Volume Damper for T-Bar Grilles and Registers

8-Inch Speedi-Grille T-Bar Lay In field installable accessory Bow Tie Radial Volume Damper with T handle for ease of adjustment. For use with Speedi-Grille T-Bar Grilles and Register models for adjusting volume of air in both Supply and Return Air applications that have a 8-Inch round collar connection.