Unicel Replacement Filter Cartridge for 50 sf Coleman/Maax Spa | C-8450
Unicel
SKU: C-8450
Unicel C-8450 Replacement Cartridge Filter – 75 Sq Ft (Open Top/Bottom, 3" ID)
The Unicel C-8450 is a premium 75 sq ft pleated cartridge filter designed for select pool and spa filter canisters that use an open-top / open-bottom element with a 3" inside diameter opening. It’s a common replacement for systems that rely on a center standpipe to align the cartridge and seal the flow path through the filter.
Key Features
- 75 sq ft filtration area for effective debris capture and steady circulation
- Open top and open bottom end caps for standpipe-style filter housings
- Durable pleated media built for repeated cleaning cycles
- Helps restore strong flow and water clarity when replacing a worn or clogged cartridge
Specifications
- Part Number: C-8450
- Filter Type: Pleated cartridge
- Filtration Area: 75 sq ft
- Length: 19-1/2"
- Outside Diameter: 8-15/16"
- Top End Cap: Open
- Top Inside Diameter: 3"
- Bottom End Cap: Open
- Bottom Inside Diameter: 3"
- Pleat Count: 215
Replaces / Alternate Part Numbers
- Pleatco: PA75
- Filbur: FC-0680
Common Applications
- Used in select cartridge filters that take an 8-15/16" OD, 19-1/2" long cartridge with 3" open ends
- Common replacement size for a variety of residential cartridge filter housings
When to Replace
- Pleats are torn, frayed, or separating from end caps
- End caps are cracked/warped or the inner core is collapsing
- Filter pressure rises quickly after cleaning or circulation remains restricted
- Water stays cloudy even with good chemistry and routine filter cleaning
Related Products
- Unicel C-8450 (Shop / Variants)
- Pleatco PA75 (Alternate Cartridge)
- Filbur FC-0680 (Alternate Cartridge)
- Cartridge Filter Cleaner
- Cartridge Cleaning Wands
- Filter Tank O-Rings & Gaskets
Maintenance Tips
- Rinse the cartridge when pressure increases about 8–10 PSI above your clean starting pressure.
- Rotate the cartridge while spraying between pleats to remove trapped debris more thoroughly.
- Deep clean periodically to remove oils and scale; always degrease first, then remove scale if needed.
- Consider rotating between two cartridges to extend service life and maintain better flow.
Questions about returns? View our return policy.
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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