Pentair Spa/Pool Filter Cartridge Inner/Outer Pack (170147) tees and control-side features align with

and control-side features align with the intended system

A properly matched Buna-N replacement helps preserve original fit and contributes to a more accurate service result without unnecessary assembly changes

1-1/2" Slip

Stable electrical performance ensures reliable operation across varying conditions

Helps restore proper control-area trim and appearance

Pentair Spa/Pool Filter Cartridge Inner/Outer Pack (170147) tees and control-side features align withThe Pentair 170147 filter cartridge inner and outer pack is designed for compatible spa and pool filter applications where a matched cartridge set is needed. A paired cartridge arrangement like this is useful because it refreshes both the inner and outer filtering elements together, helping restore the filter assembly more completely than replacing only one piece. This style of replacement is often chosen when the existing cartridges are worn,