Cartridge catalog4CH-949
Replacement cartridge
4CH-949
Unicel
A source-reviewed replacement used with 20 compatible filters. Confirm the equipment model and physical details before ordering.
- Application
- Spa filters
- Compatible filters
- 20
- Specifications
- Dimensions reviewed
- Last reviewed
- July 26, 2026
Cartridge measurements
Size & end caps
- Outside diameter
- 5 in
- Cap-to-cap length
- 13 1/16 in
- Top
- Not specified
- Bottom
- Female thread1 1/2 in opening
Compatibility
Compatible pool and spa filters
Spa filterPDC Spas TruSwim Series TSX219 Hot Tub Zone1 filter element needed→Spa filterPDC Spas Summit Swim Series SX151 filter element needed→Spa filterPDC Spas Summit Swim Series SX15s1 filter element needed→Spa filterPDC Spas Summit Swim Series SX171 filter element needed→Spa filterPDC Spas Summit Swim Series SX191 filter element needed→Spa filterPDC Spas Summit Swim Series SX219 Swim Zone1 filter element needed→Spa filterPDC Spas Summit Swim Series SX219 Hot Tub Zone1 filter element needed→Spa filterPDC Spas Summit Swim Series SX219s Swim Zone1 filter element needed→Spa filterPDC Spas Summit Swim Series SX219s Hot Tub Zone1 filter element needed→Spa filterPDC Spas Synergy Series FX151 filter element needed→Spa filterPDC Spas Synergy Series FX15s1 filter element needed→Spa filterPDC Spas Synergy Series FX171 filter element needed→Spa filterPDC Spas Synergy Series FX191 filter element needed→Spa filterPDC Spas Synergy Series FX219 Swim Zone1 filter element needed→Spa filterPDC Spas Synergy Series FX219 Hot Tub Zone1 filter element needed→Spa filterPDC Spas Synergy Series FX219s Swim Zone1 filter element needed→Spa filterPDC Spas Synergy Series FX219s Hot Tub Zone1 filter element needed→Spa filterPDC Spas Splash Series BAJA121 filter element needed→Spa filterPDC Spas Splash Series BAJA151 filter element needed→Spa filterPDC Spas Vitality Swim Spa Series 2009-present1 filter element needed→
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