Harmsco HC/40 Series Filters -- Fit Waterbetter 40 and HUR-40 Filter Housings Harmsco HC/90 Filters -- Fit Waterbetter 90 and HUR-90 Filter Housings Harmsco HC/170 Filters -- Fit Waterbetter 170 and HUR-170 Filter Housings Harmsco PP-HC Filters are 1 Micron Absolute Rated

Up-Flow -A design so superior it’s patented!
Harmsco® Up-Flow Cartridge Filters outperform conventional filter designs! Venting valves are not necessary and filtration efficiency is improved.