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

PC Connectivity-- opto-isolated USB with optional HI 92000 software and micro USB cable

2 x 10 Liter

Contains Mycorrhizae mycorrhizal inoculum (Glomus intraradices)

636 in diameter and 8 mil wall

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