Unicel Replacement Filter Cartridge 10 sf Skim Filter | C-4310

Unicel SKU: UNFC4310
Unicel Replacement Filter Cartridge 10 sf Skim Filter | C - 4310 - Cartridges - img - 1

Unicel Replacement Filter Cartridge 10 sf Skim Filter | C-4310

Unicel SKU: UNFC4310
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Unicel C-4310 Replacement Filter Cartridge

Part Number: C-4310

Description

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.

Hours Of Operation: 

Monday - Friday: 8:00 am to 4:00 pm Phoenix Time

Saturday and Sunday: Closed

  • Orders costing more than  $300 WILL be required to have signature confirmation upon delivery.
  • Handling time is typically only 1 day.   
  • Any item ordered after 1pm Phoenix time, may not ship same-day.
  • Call us if you require expedited shipping and we can give you quotes based on your needs.

Return Policy:

  • All products, except as noted below, are eligible for return up to 30 days after receipt of item.
  • For returns, an RMA form must be filled out HERE or customers can call for additional help.
  • Shipping costs will be deducted from all returned items.
  • Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in. 
  • Items broken, damaged, or inoperable due to installer error will not be refunded.
  • Fill out the return form or give us a call to obtain an RMA and return shipping label.
  • There are no returns on the Pentair Colorsync 618031
  • No returns on pool cleaners.
  • No returns on opened seals and o-rings.
  • No returns on capacitors.
  • If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
  • All products denied upon arrival at customers house WILL be charged the cost to ship.
  • Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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