Backdraft Damper SIZE:12 in At 156 watts it runs

At 156 watts it runs near 9

so the finer cut costs nothing in throughput

Netafim 4WAY FLAT WH PE 24 ANG-ARW 25EA

With this level of precision

Backdraft Damper SIZE:12 in At 156 watts it runsGalvanized 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