Kootenay Green Line Filter 425S w/4" Flange - 250 CFM

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Kootenay's Green Line Carbon Filters are the only carbon filters we know of that are made in North America using carbon from a renewable resource. Green Line filters feature a 2 inch bed of wood based carbon sourced from forest fires. It is then activated, dusted, and screened to ensure quality and consistency.  Each filter is built with a solid galvanized steel housing and includes a prefilter to help extend the life of the filter.  Replacement prefilters are available.

Max Exhaust CFM 125 CFM
Max Recirculate CFM 250 CFM
Max Operating Temp 176˚F
Min Recommended Airflow 63 CFM
Outside Diameter 7.9"
Length 13.8"
Total Weight 8.8 lbs
Carbon Weight 4.9 lbs
Carbon Bed 2.0"

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