Unicel Replacement Filter Cartridge 120 sf CX1200-RE/Waterway Pro Clean | C-8412
Unicel
SKU: C-8412
Unicel C-8412 – 120 sq ft Replacement Pool Filter Cartridge
Product Overview
The Unicel C-8412 is a high-quality OEM replacement cartridge filter designed for larger residential in-ground pool systems. With approximately 120 square feet of pleated media, this cartridge delivers extended filtration and longer run times between cleanings.
Key Features
- ~120 sq ft filtration area for improved debris capture and longer cycles.
- Heavy-duty spun-bonded polyester media with durable molded end caps.
- Open end-cap design (4″ inner diameter) for easy drop-in replacement.
- Compatible with major filter tanks requiring a cartridge of 8-15/16″ diameter × 23-5/16″ length.
Technical Specifications
- Part Number: C-8412
- Filtration Area: ~120 sq ft
- Outside Diameter: ~8-15/16″ (approx. 8.9375″)
- Length: ~23-5/16″
- Pleat Count: ~172 pleats
- End Caps: Open both ends with molded gasket, 4″ I.D.
Applications & Compatibility
This cartridge fits filter vessels that accommodate a 120-sq-ft cartridge and whose dimensions match the specs above (OD ~8-15/16″ × length ~23-5/16″). Confirm your existing cartridge’s size and open end-cap type before purchasing.
Installation Instructions
- Turn off the pump and relieve any system pressure before opening the filter tank.
- Remove the old cartridge and clean out the filter tank, especially the bottom.
- Inspect and ensure the o-ring or tank gasket is in good condition; replace if needed.
- Insert the new C-8412 cartridge, ensuring it seats properly and that the end caps align correctly.
- Reassemble the filter tank, restore system power and monitor pressure and flow after startup.
Troubleshooting
- High pressure soon after installation: Ensure the cartridge fully expanded and there’s no blockage or collapsed pleats.
- Reduced flow or clarity issues: Confirm the cartridge is the correct size, check for damaged media or bypass around end caps.
- Leaks or wet motor compartment: Check tank lid seal and that cartridge doesn’t interfere with the lid or clamp ring seating.
Maintenance Tip
For best results, rinse the cartridge monthly in a moderate debris environment and every 4-6 weeks if heavy use or large debris load. Replace the cartridge when media shows wear, pleats are permanently compressed, or problematic pressure rise persists. Using the correct size filter like the C-8412 helps maintain water clarity and extend your system’s life.
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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