Pentair RPM 360 Sq Ft Cartridge Filter Lid Assembly (59021700) pleatco A body basement assembly is

A body basement assembly is useful because it helps support internal parts and maintain the structural base of the tool

and installation layout

An assembly like this is useful because it provides the mounting point needed to support a volleyball pole

Correct matching at this level is what helps the finished replacement feel like a true restoration rather than a workaround

Pentair RPM 360 Sq Ft Cartridge Filter Lid Assembly (59021700) pleatco A body basement assembly isPentair Lid Assembly, Filter Cartridge RPM 360Sf (59021700) is a replacement filter or filter system component for compatible Pentair pool filtration equipment. These parts help support proper filtration, water distribution, sealing, or access within the filter assembly. Use this part when the original component is cracked, worn, leaking, damaged, or being replaced during a filter rebuild. Confirm the filter model, tank size, thread style, and part