iPower
iPower Air Carbon Smelliness Control with Australia Virgin Charcoal, Reversible Flange and Pre, Scrubber Fit with Inline Duct Fans for Grow Tents and Hydroponics Systems, 4" Filter, Black
AC Infinity
AC Infinity Air Carbon Filter 6" with Premium Australian Virgin Charcoal, for Inline Duct Fan, Odor Control, Hydroponics, Grow Rooms
VIVOSUN
VIVOSUN 4 Inch Air Carbon Filter Smelliness Control with Australia Virgin Charcoal for Inline Fan, Grow Tent Smelliness Scrubber, Pre-Filter Included, Reversible Flange 4" x 12", Black
VIVOSUN
VIVOSUN 4 inch Air Carbon Filter Odor Control with Australia Virgin Charcoal for Inline Fan Pre-Filter Included Reversible Flange