This replacement filter cartridge kit for the System 3 S8M500 Modular Media Filter. Because of its 500 square foot filter area, the S8M500 filter houses one smaller inner cartridge and one larger outer cartridge. This kit includes one small and one large replacement cartridge.
Large Cartridge (25022-0225S)
- 291 square feet of filtration capacity
Small Cartridge (25021-0224S)
- 209 square feet of filtration capacity