Darlly 70506 FC-0463 FC-0491 7CH-50 PSN50-L Spa/Pool Filter Cartridge flocontrol A part like this is

A part like this is useful because it helps create a stable fastening point in the related assembly while the washer supports a cleaner load distribution at the connection surface

White finish supports an original-style appearance

For compatible 2

That helps restore directional control in a compact

Darlly 70506 FC-0463 FC-0491 7CH-50 PSN50-L Spa/Pool Filter Cartridge flocontrol A part like this isThe Darlly 70506 filter cartridge is built for compatible filtration systems that require 50 square feet of media with a 1 1 2 inch MPT bottom connection. Its 7 inch diameter and 14 3 4 inch length create a balanced cartridge profile that works well in systems where threaded lower engagement is just as important as media area. A threaded bottom cartridge like this is especially useful in equipment where a standard open end filter will not seat