Pack of standard pre-filter and anti-sediment coiled cartridges 20 micron in 93/4 for standard 93/4 or 10 filter holder bowls. To be installed on a hot or cold water network, these anti-fouling cartridges are ideal for filtering solids or fine organic particles. The advantages of 93/4 anti-sediment 20 micron coiled set: Economical package, the most appreciated by our customers and durable. Strong and durable mesh - no fiber residues in the water. High resistance to high temperatures. Made in Italy and ACS certified. High-quality coiled polypropylene cartridges, they provide effective pre-filtration of organic impurities, rust or dust in the water. Sediment Filter Coil Cartridge 20 micron for 9 3/4 and 10 inch filter holders or water purifiers These cartridges are ideal for pre-filtration, placed before your water softener, or upstream of a filter cartridge at the activated carbon for drinking water or even to treat rainwater intended for irrigation, sanitation 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 3/4 compatible in standard size 93/4 or 10 available in our store. ADDITIONAL INFORMATION: These coiled filter cartridges must be replaced at least once a year. We recommend using these cartridges for filtering or pre-filtering water upstream of an activated carbon filter cartridge or ultrafiltration cartridge (membrane). It is also advisable to place a cartridge with a lower filtration threshold downstream (1 micron for example) to properly finish the purification of your water and eliminate all residual organic matter in the water. Available in express delivery 24 to 48h.