The Green Line is Kootenay Filter Inc.’s Lightweight Filter Line. KFI is proud to have KFI 425 S with 4″ Flange that uses only virgin activated carbon made from renewable resources. The proven design, manufacturing process and a production staff with years of experience make our product one of the best filters on the market. Our Lite line filters are available with flange sizes 4”-14” rated for 250 – 3250cfm. Our filters consist of only 2 things, steel and carbon; they are effective and robust. Green Line Filters Virgin activated carbon made from renewable resources Dedusted and screened Lightweight filter Max operating temperature 80˚C / 176˚F Max allowed humidity 70% (short term only) Prefilter installed Robust galvanized steel housing Single packaged and sealed for storage Made in North America 2” carbon bed Flanges installed from 4” to 14”
