Backdraft Damper Rocks Co-extruded white-over-black: Reflective UV-resistant skin

Co-extruded white-over-black: Reflective UV-resistant skin over an algae-blocking core

White UV-resistant jacket: Bounces stray light back to the canopy and stays visible during a fixture-down troubleshoot

636 in diameter and 8 mil wall

Specification Detail Model 22500-005180 Flow Rate 6

Backdraft Damper Rocks Co-extruded white-over-black: Reflective UV-resistant skinGalvanized Steel Backdraft Damper for Ventilation Ducting Built from durable galvanized steel, this backdraft damper is made for reliable performance in active ventilation setups. When your inline fan turns off, the internal flap closes to block reverse airflow, helping stabilize your environment and reduce backflow issues in duct runs. Stop Reverse Airflow to Help Retain CO2 and Reduce Odors By preventing air from flowing backward, it helps you save