Unicel C-4310 Replacement Filter Cartridge
Part Number: C-4310
This replacement cartridge from Unicel provides 10 square feet of filtration surface area and is designed for smaller skim-filter housings typically used in spas or compact pool systems. Its durable polyester media and open both-ends design make it suitable for direct swap installations.
Compatibility & Fitment
- Fits housings requiring a cartridge approximately 4.25″ outer diameter and 4″ length.
- Both ends are open with an inner hole of approx. 2-1/16″ diameter for drop-in fitment.
- Designed for use in spa and pool skim filters rated at 10 sq ft where the C-4310 cartridge is specified.
Features & Specifications
- Cartridge surface area: ~10 sq ft.
- Outer diameter: ~4.25″.
- Length: ~4″.
- Pleat count: ~216 pleats for improved flow and filtration capacity.
- Open-end configuration both top and bottom with ~2-1/16″ inner diameter.
- Heavy-duty spun-bond polyester media designed for longevity in pool/spa environments.
Installation Notes
Shut off filter pump and relieve system pressure. Remove the old cartridge and inspect the filter housing for debris or damage. Insert the new C-4310 cartridge ensuring seating and alignment are correct. Restore normal circulation and monitor filter pressure for proper operation.
Maintenance Tip
Clean the cartridge every 4-8 weeks depending on use and water quality. Replace the cartridge when you notice significantly increased pressure or when maintenance cleaning no longer restores efficient flow. A well-maintained cartridge helps prolong filter life and maintain optimal water clarity.
