Parts - BC Activated Coconut Charcoal filter 

The BC Activated Coconut Charcoal filter fits a 4-inch duct. 

These cylinders of Activated Coconut Charcoal are fast becoming the most popular method for neutralizing nutrient odors.

They are very safe and they do the job. Depending on the use, these filters will clean the air of odors for approximately 1 - 2 years.

Easy to install. For the BC dryer, Bloombox or Producer grow chambers, just mount on the main air exchange outlet on the back of the machine.