Pool Filter Source
Cartridge catalogC-4975

Replacement cartridge

C-4975

Unicel

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

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

Cartridge measurements

Size & end caps

How to measure
Outside diameter
5 in
Cap-to-cap length
20 1/8 in
Top
Open2 in opening
Bottom
Open2 in opening

Compatibility

Compatible pool and spa filters

Check the complete equipment label before choosing a cartridge.
Spa filterPDC Spas TruSwim Series TSX151 filter element neededSpa filterPDC Spas TruSwim Series TSX171 filter element neededSpa filterPDC Spas TruSwim Series TSX191 filter element neededSpa filterPDC Spas TruSwim Series TSX219 Swim Zone1 filter element needed

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