Active Air Inline Carbon Filter - 8" x 30"

A terminal filter is closed at one end, so it has to sit at the end of the duct run, typically inside the grow room. The Active Air Inline Carbon Filter is open at both ends and connects mid-duct, so it can be installed anywhere along the duct line. That lets you mount it outside the grow room entirely and run ducting into the space to extract air.

In a single-stage filter, air makes one pass through the carbon, and any odor molecules missed on that pass exit untreated. Two-stage filtration routes air through the carbon bed on entry and again on exit, giving odor molecules more contact with the activated carbon. The result is more complete odor removal, especially at higher airflow rates.

Yes, and that's the main advantage of the inline design. Mount the filter in an adjacent space, closet, attic or above the tent, then run ducting from the filter into the grow area. The fan can also sit outside the room, keeping both pieces of equipment out of your growing space.

No. The two-stage internal design is bidirectional, so filtration is the same whichever end the air enters from. You don't need to check or mark airflow direction before connecting your ducting, which helps when maneuvering a larger filter in tight spaces.

The 6" × 24" inline model is rated at 500 CFM with a 6" flange, which suits medium grow spaces running 6" ducting. The 8" × 30" model raises that to 750 CFM with an 8" flange, so it's the better match for larger rooms or systems built around 8" fans and ducting. Size the filter to your fan and duct diameter for the best results.

Pair the Active Air Inline Carbon Filter 8" × 30" with an 8" inline fan rated at or below 750 CFM. A fan that exceeds the filter's rated airflow shortens the time air spends in the carbon bed, which lets odor slip through. A variable-speed fan lets you dial back airflow when odor control matters most.