Pentair StaRite S7M400 Inner/Outer System Filter Cartridge (170146) aquaflo A larger replacement like this

A larger replacement like this is especially useful when the weakness is spread across more than one internal component

or cosmetically degraded

The Pentair Sta-Rite 08428-0125 rebuild kit is designed for compatible 1-1/4 inch gunite eyeball inlet applications in white

and other supported operating modes

Pentair StaRite S7M400 Inner/Outer System Filter Cartridge (170146) aquaflo A larger replacement like thisRestore filtration performance in compatible System 3 modular cartridge filters with this genuine Pentair Pool Products S7M400 inner and outer cartridge pack, part 170146. The paired cartridge design provides the correct replacement media set for systems that rely on both inner and outer elements to capture fine debris. Use this pack when cartridges are heavily stained, damaged, pleats are collapsed, or cleaning no longer restores flow. Replacing both