GrowBright Pure Flow 4 Jr. Carbon Filters are constructed with a "packed bed" design to give consistent performance, long life (12 to 18 months), and are completely maintenance free. The packed bed design prevents the formation of preferential channels which can allow untreated air through the system. This unique design gives GrowBright Pure Flow Carbon Filter a larger surface area for significantly lowered pressure drops.

Effective treatment requires the exchange of air in the growing area in a period of 5 minutes. Compute your requirements by multiplying the width times the length times the height of your growing area to obtain the total cubic feet. Divide this number by 5 to determine the proper filter size needed.

For example, if your growing area is 8 feet long by 8 feet wide by 8 feet tall, it contains a total of 512 cubic feet. To treat this area in five minutes, you would need to use a fan with a CFM (cubic feet per minute) rating of approximately 102.

This GrowBright Pure Flow 4 Jr. Carbon Filter successfully eliminates odors for up to 18 months. The GrowBright Pure Flow Carbon Filter is light-weight and has a built-in 4" flange for easily connecting to ductwork.

Recommended fan is GrowBright 4" High Velocity Inline Fan

Specs:

Recommended Max Airflow: 150-265cfm

Flange: 4 inches (built-in)