Pack of standard prefiltration and antisediment wound cartridges 20 microns in 9 34 for standard 9 34 or 10 filter holder bowl. These antiimpurity cartridges are installed on a hot or cold water network and are ideal for filtering solids or fine organic particles. The advantages of the 9 34 antisediment 20 micron wound prefiltration cartridge set Economical packaging, the most appreciated by our customers and durable. Strong and durable flushing networkno fiber residues in the water. High resistance to high temperatures. Made in Italy and ACS certified. High quality wound polypropylene cartridges, they provide effective prefiltration of organic contaminants, rust or dust in the water. Sediment filter coil cartridge 20 microns for 9 34 and 10 inch filter holders or water purifiers. These cartridges are ideal for prefiltration, placed before your water softener, or upstream of a filtration cartridge at activated carbon for drinking water or even to treat rainwater intended for irrigation, sanitary facilities or even your washing machine. For the installation of this cartridge you can equip yourself with a single filter holder or a double transparent filter holder with brass insert 1 or 34 compatible in standard size 9 34 or 10 available in our store. ADDITIONAL INFORMATION These wound filter cartridges must be replaced at least once a year. We recommend using these cartridges for filtration or prefiltration of water upstream of an activated carbon filter cartridge or ultrafiltration membrane cartridge. It is also advisable to place a cartridge with a lower filtration threshold downstream of the 1 micron for example to properly complete the purification of your water and eliminate any remaining traces of organic matter in the water. Available in express delivery 24 to 48 hours.