Unicel Replacement Filter Cartridge 25 sf Waterway | C-4326
Unicel
SKU: C-4326
Unicel Cartridge – 25 sq ft | Model C‑4326
The Unicel C‑4326 offers 25 sq ft of filtration media in a compact cartridge, designed for use in Rainbow, Waterway, Pentair Dynamic Series, and other compatible spa systems.
Key Features:
- 25 sq ft of 3 oz spunbonded polyester (Reemay®) media
- Approximately 106 uniform pleats for efficient dirt‑holding capacity
- Dimensions: 4⅞″ outer diameter × 13 5/16″ length
- Both ends open with 2⅛″ inner diameter, featuring molded gaskets for easy drop‑in installation
Technical Specifications:
- Model / SKU: C‑4326
- Filtration Area: 25 sq ft
- Pleat Count: ~106
- Media Basis Weight: 3 oz/yard Reemay polyester
- End Cap Style: Open top & bottom, 2⅛″ ID with molded gaskets
- Filter Rating: Debris filtration down to ~20 µm
- Approx. Weight: ~1.2 lb
Benefits:
- Compact size well-suited for smaller spa systems
- Reliable performance and flow at an economical price
- Washable and rinseable media for extended product life
- Trusted OEM-quality replacement for Waterway, Rainbow, and related brands
Maintenance Tip: Rinse gently with a garden hose weekly and perform deeper cleaning monthly. Replace annually, or sooner if pressure increases or media shows discoloration or clogs.
SKU: C-4326
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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