Pool Filter Source
Cartridge catalogULTRA-C3
Illustrative rendering of a tall open-end pleated pool filter cartridge
Illustrative rendering—confirm the part number and measurements.

Replacement cartridge

ULTRA-C3

Pleatco Ultra

A source-reviewed replacement used with 4 compatible filters. Confirm the equipment model and physical details before ordering.

Application
Pool filters
Compatible filters
4
Specifications
Dimensions reviewed
Last reviewed
July 26, 2026

Cartridge measurements

Size & end caps

How to measure
Outside diameter
10 1/16 in
Cap-to-cap length
23 5/8 in
Top
Open6 in opening
Bottom
Open6 in opening

Compatibility

Compatible pool and spa filters

Check the complete equipment label before choosing a cartridge.
Pool filterPentair Clean & Clear CC 1001 cartridge neededPool filterPentair Clean & Clear CC 1251 cartridge neededPool filterPentair Clean & Clear RP CCRP 1001 cartridge neededPool filterPentair Posi-Clear RP PXCRP1001 cartridge needed

More from Pleatco

Browse the catalog