Unicel Replacement Filter Cartridge 20 sf Hayward CX200XRE | C-4320

Unicel SKU: UNFC4320
Unicel Replacement Filter Cartridge 20 sf Hayward CX200XRE | C - 4320 - Cartridges - img - 1

Unicel Replacement Filter Cartridge 20 sf Hayward CX200XRE | C-4320

Unicel SKU: UNFC4320
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Unicel C-4320 Replacement Filter Cartridge – 20 sq ft

The Unicel C-4320 is a high-quality replacement cartridge designed for smaller pool and spa filtration systems. Its pleated media provides efficient debris capture, helping maintain clear and balanced water.

Key Features

  • 20 square feet of premium pleated filtration media.
  • Durable end caps and rigid core construction for long service life.
  • Designed to restore optimal flow and filtration in compatible systems.

Technical Specifications

  • Part Number: C-4320
  • Media Area: 20 sq ft
  • Approx. Dimensions: 4⅝″ diameter × 20″ length
  • End Caps: Open top and bottom (approx. 2″ inner diameter openings)
  • Application: Replacement filter cartridge for compatible pool and spa systems

Installation & Usage Notes

Turn off the system and relieve all pressure. Remove the existing cartridge and clean the filter housing of debris. Insert the new C-4320 cartridge, ensuring proper seating at both ends. Reassemble the filter, restart the system, and check for normal operating pressure.

Maintenance Tips

  • Rinse the cartridge regularly to extend life and maintain strong flow rates.
  • Replace the cartridge when the pleats become worn, damaged, or cannot be restored with cleaning.
  • Keep spare filter cartridges on hand for quicker servicing and uninterrupted filtration.

Why Choose This Cartridge?

The Unicel C-4320 offers a reliable, direct-fit replacement that restores filtration efficiency, protects pump performance, and helps maintain consistently clear water in small pools and spas.

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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