①. Pack of standard pre-filtering and anti-sediment coiled cartridges 20 microns in 93/4 for standard 93/4 or 10 filter holder bowl. ②. To be installed on a hot or cold water network, these anti-impurity cartridges will be ideal for filtering solid matter or fine organic particles. ③. The advantages of the 93/4 anti-sediment 20 micron coiled pre-filtration cartridge set: Economic pack, the most appreciated by our customers and durable. ④. Strong and durable spool mesh - no fiber residue in the water. ⑤. High resistance to high temperatures. ⑥. Made in Italy and ACS certified. ⑦. Wound polypropylene cartridges, they provide effective pre-filtration of organic impurities, rust or dust in the water. ⑧. Sediment filter coil cartridge 20 microns for 9 3/4 and 10 inch filter holder or water purifier These cartridges are ideal for pre-filtration, placed before your water softener, or upstream of a filtration cartridge at the activated carbon for drinking water or even to treat rainwater intended for watering, sanitary facilities or even your washing machine. ⑨. For the installation of this cartridge you can equip yourself with a simple filter holder or a double transparent filter holder with brass insert 1 or 3/4 compatible in standard size 93/4 or 10 available on our shop. ⑩. ADDITIONAL INFORMATION: These coiled filter cartridges must be replaced at least once a year. ⑪. We recommend that you use these cartridges for filtration or prefiltration of water upstream of an activated carbon filter cartridge or ultra filtration cartridge (membrane). ⑫. It is also advisable to place a cartridge with a lower filtration threshold downstream of it (1 micron for example) to correctly finish the purification of your water and eliminate all residual traces of organic matter in the water. ⑬. Available in express delivery 24 to 48h.