AC Infinity Refillable Carbon Filter Kit 4” with Additional Refill, Odor Removal Air Scrubber For 4" Inline Fan and Ducting, Reusable Charcoal Filter for Grow Tent Grow Room Hydroponics

Reusable carbon filter features a patented design that eliminates the need to replace entire filters. Includes 1+ refill to match the filtration capacity of two standard 4” carbon filters while costing less. Removable twist-off flanges support easy, tool-free refilling using the included funnel and scoop. Larger chamber is lab-tested to block odors as effectively as standard filters with no compression required. Dual-layered steel mesh with protective coating withstands high humidity in grow tents through many grow cycles., Weight: 12.65012459356 pounds, Manufacturer: AC Infinity