Pentair - Sta-Rite System 3 S7M400 Modular Media 400 - Inner and Outer Replacement Filter Cartridge Kit

These Replacement Filter Cartridges are compatible with the Pentair Sta-Rite System 3 S7M400 Modular Media Filter. Because of their large 400 sq. ft. filter area, the S7M400 Filter holds one inner 136 sq. ft. cartridge and one larger outer 264 sq. ft. cartridge. Available individually or in a Replacement Kit that includes a small and large replacement, these quality cartridges extend the time between replacements and reduce your maintenance. Easy to clean and simple to replace, they filter down to the finest debris, leaving you with pool water that sparkles.