Pre Filter PP Cotton Filter Element Small Household Filter Shower Water Heater Faucet Washing Machine Kitchen|Under-Sink & Countertop Filtration Product Features 1.Water Pipe Filter PP Cotton Filter Element Removing Impurity Rust Sand Home Use. 2.Ideal for washing machine, water heater, kitchen etc 3.Can effectively filter rust, sediment, red worm etc 4.Antifreeze and explosion-proof *Adopts standard 4-point interface 5.Selects quality filter element, healthy and safe 6.Removable filter element for convenient use Fiter Element Advantage PP cotton filter filter coarse particles and rust,remove alga ,parasite .blood worm.life time keep 3-6 months ,need to replace the filter element Activated cartoon filter adsorb chemical substances,adsorption effect on odor and heterochromatic color,remove oganic substances .life time keep 3-6 months ,need to replace the filter element Ceramic filter filter dirt, debris, and bacteria out of water,removes particles larger than the size of the pores in the filter material,remove bacteria, protozoa, and microbial cysts.It can be used for repeated cleaning. Life time more than 6 month