Every SL Line Filter needs Flanges. These Flanges will work on Kootenay/KFI Filters, Can filters, Mountain air and most other flat topped charcoal filters. Flanges are also available separately for your specific needs in 4″, 6”, 8”, 10” 12” & 14″ size. Filter size Flange option KFI SL 330 4″ Wide, 6″ or 8″ Flange KFI SL 660 4″ Wide, 6″ or 8″ Flange KFI SL 500 6″ Wide, 8″ Wide Flange KFI SL 750 8″ Wide, 10″ Flange KFI SL 1000 8″ Wide, 10″ or 12″ Flange KFI SL 1250 8″ Wide, 10″ or 12″ Flange KFI SL 1500 8″ Wide, 10″ or 12″ Flange KFI SL 1050 HD 12″, 14″ or 16″ Flange
