Unicel Replacement Filter Cartridge 10 sf Skim Filter | C-4310
Unicel
SKU: C-4310
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.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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