Use Backdraft Damper to prevent reverse airflow in your indoor grow rooms or tents when fans are switched off. It saves Co2 and prevents the smell from escaping out of the rooms.
Galvanized steel coating allows you to use the damper carefree in every weather condition. In addition, it comes with high-quality rubber gaskets installed already on the outside for an airtight seal.
SKU/ Model: DL-403006
Brand: DL Wholesale
Size: 6 inches
Material: Galvanized steel
I use the dampers to keep the co2 from being pulled out of my tent. A short time after my lights turn off my fans turn off. I use the EZ CO2 bags in my tent.