This listing is for 0.35 Micron. Flow-Max industrial quality pleated sediment filters in all standard 10", 20", and big blue sizes. Available in 0.35 & 1 micron absolute (99.9% removal), and nominal ratings of 1, 5, 20, and 50 microns. Each cartridges is individually wrapped.Flow-Max filter cartridges outperform wound, spun, melt blown, resin bonded and other "depth" type filter elements because our cartridges are pleated to provide increased surface area and longer life.Lower pressure drop is another significant advantage, using Flow-Max pleated cartridges, which allows for increased flow rates and the use of smaller filter housings to reduce capital equipment costs.Further savings are provided because our 100% synthetic filter media is cleanable, five micron and up, to lower cartridge replacement costs.Flow-Max filter cartridges outperform other pleated elements because our high performance filter media is systematically produced using 100% synthetic fibers, with no binders or additives to leave a residue, foam or contaminate.Our filter media is dramatically thicker than other products. For this reason, Flow-Max cartridges provide "depth" filtration for greater sediment removal, along with more surface area with our pleated design.Ideal for water filtration to remove Cryptosporidium and Giardia cysts. 0.35 µ nominal utilizes a multi-ply filter media for greater retention efficiencies and long life.  Flow-Max Filter Cartridges InformationFilter media (std. grades)Synthetic (cellulose free)End capsMolded UrethaneCenter tubesPVCOperating temperatures40°F to 140°F (4.4°C to 60°C)Recommended change out20-30 PSID* (maximum)Maximum pressure change40* PSIDFlow rate per 9-5/8" cartridge50 GPM  * Pounds per square-inch dropThis cartridge replaces:Harmsco HC-PP-90-0.45Harmsco HC/90-0.35