VCR9 – Radial Damper, For use with SPD, SCD, PDF, PDC Supply Diffusers

The VCR9 round, galvanized steel, radial style damper provides airflow adjustment at the diffuser or plenum neck. Volume control blades move simultaneously in opposite directions, to provide superior metering and control with minimal disturbance of the air pattern. For optimized sound performance it is recommended to match an upstream duct branch damper for large volume control with a damper at the diffuser for fine tuning.