Pentair Spa/Pool Filter Cartridge Inner/Outer Pack (170148) tecmarkcorp Because this assembly influences how

Because this assembly influences how water is directed and experienced within the seat

This replacement is especially useful when the original adapter is corroded

1-1/2 inch FPT fine-thread connection

become waterlogged

also associated with 3902-style applications

Pentair Spa/Pool Filter Cartridge Inner/Outer Pack (170148) tecmarkcorp Because this assembly influences howThe Pentair 170148 filter cartridge inner and outer pack is built for compatible spa and pool filtration systems that use a dual cartridge arrangement. A pack like this is useful because it renews the paired filter elements as a set, which can help maintain more balanced performance inside the housing. Replacement is often worthwhile when the original cartridges are clogged, deteriorated, or no longer delivering the water clarity and flow the system