5 Sizes Swimming Pool Equipment Type C Filter for BESTWAY Pumps Cartridges Universal Replacements for Pool CleaningProduct Description:1. Sifts dirt and debris from your pool with your pump2. This filter cartridge sifts out the debris and dirt in your above ground swimming pool so the pump can refill it with clean pool water.3. It&x27;s recommended you replace your filter cartridge every 2 weeks to ensure your pool obtains the highest standard of cleanliness and hygiene.4. When you maintain your pool&x27;s filter, the water in your pool stays attractive and fresh all summer long, which makes it all the more enjoyable for your family and friends.Ccompatible with:1*Filter for Bestway Type VII Pool Filter Cartridge 58385E2*Filter Cartridge Bestway is for use in Lay Z Spa filter pump.3*Bestway Used in filter pumps of the following series x8604, xx638, xx636, 28672 and chlorogenerator 28674.?Compatible cartridge "A" for filter pumps: old models 58604/56638/56636 and new models 28604/28638/28636.?4*Filter Cartridge II is for use in Bestway Lay Z Spa filter pump.Item model number 580945*Bestway VI Filter Cartridge is suitable for use in the following Lay-Z-Spa model pumps: