PWWCT200 / C-8419 / FC-1288
200 sq ft replacement filter cartridge • 8.9375″ OD × 21″ long
At 200 square feet, the PWWCT200 is the largest single cartridge on this site, a Waterway Clearwater II element that's nearly 9 inches across and 21 inches tall. It's a single-cartridge filter, so despite the size there's just one to replace. Waterway numbers it 817-0200NB, also sold as Clearwater 2 200, and the cross-references are Unicel C-8419 and Filbur FC-1288. Waterway housings show up on a lot of above-ground and smaller in-ground pools, often as the OEM filter on pool kits. Confirm you have the 200 model, not the smaller Clearwater II 150, which uses a different, shorter element.
Compare on Amazon
PWWCT200 replacements on Amazon
The buttons below pull up Amazon results for each cross-reference part number. Same physical cartridge, different stickers, often different prices. Cross-shop and pick the cheapest option that has solid recent reviews.
Cross-Reference & Interchangeable Part Numbers
| Brand | Part Number | Type |
|---|---|---|
| Pleatco | PWWCT200 | Primary |
| Unicel | C-8419 | Equivalent |
| Filbur | FC-1288 | Equivalent |
| OEM | Waterway 817-0200NB | Original Equipment |
| OEM | Clearwater 2 200 | Original Equipment |
Always verify dimensions and end-cap type before purchasing a replacement.
Compatible Pool Filter Systems
| Brand | Model |
|---|---|
| Waterway | Clearwater II 200 |
Frequently Asked Questions
What are the dimensions of the PWWCT200?
The PWWCT200 is 8.9375 inches in outer diameter, 21 inches long, with an open top and an open bottom. Total filtration area is 200 square feet. Before ordering, pull your existing cartridge and measure it yourself, or check the label inside the housing. OD and length both have to match within about an eighth of an inch, and the end-cap style needs to match exactly so the cartridge seats properly when the lid closes.
What other part numbers are interchangeable with the PWWCT200?
PWWCT200 is the same physical cartridge as C-8419, FC-1288, plus OEM versions like Waterway 817-0200NB, Clearwater 2 200. Same dimensions (8.9375" × 21"), same open top, same open bottom. The Pleatco, Unicel, and Filbur boxes ship the same media inside, just with different stickers. The only thing to watch is the end-cap style: if a cross-reference has a slightly different cap design, it may not seat right in your housing.
Is the Waterway 817-0200NB the same filter as the PWWCT200?
Yes. Waterway 817-0200NB is an OEM number, the code the tub or pool builder stamps on the cartridge they ship. The filter itself is made by Pleatco, Unicel, or Filbur, so Waterway 817-0200NB (along with Clearwater 2 200) and PWWCT200, C-8419, FC-1288 all point to one interchangeable cartridge. Buy whichever is cheapest with solid recent reviews, and just check that the dimensions match your old cartridge before you order.
How often should I replace the PWWCT200?
At 200 sq ft the PWWCT200 is a large-format pool cartridge with a lot of media to load up before it fails. In a residential pool with balanced water, two years is a realistic lifespan, sometimes more. Go by pressure rather than the calendar: once filter pressure climbs 8 to 10 psi over the clean starting point and an overnight soak won't bring it back, the media is spent. Torn or channeled pleats mean replacement no matter how old the cartridge is.
How do I clean the PWWCT200?
The PWWCT200 has open ends on both top and bottom, so water flows straight through. Pull the cartridge from the housing and hose it down. Hit the pleats from above at about a 45-degree angle so water rinses debris out instead of packing it deeper, and work top to bottom while rotating the cartridge. Skip the pressure washer. The high pressure tears or collapses pleats, and once that happens you've lost media that doesn't come back. Every few months, give it a deeper clean: soak in a dedicated pool filter cleaner per the product's dwell time, then rinse it down completely before reinstalling. Keeping a spare cartridge on the shelf is genuinely worth it. You swap, run the soak overnight, and the pool keeps filtering.
Which hot tubs and spas use the PWWCT200?
Pull your existing cartridge and read the part number off the end cap, or check the label inside the filter compartment. That's the most reliable way to confirm compatibility.
Dimensions
Specifications
| Outer Diameter | 8.9375″ |
|---|---|
| Length | 21″ |
| Top Type | Open (no end cap) |
| Bottom Type | Open (no end cap) |
| Filtration Area | 200 sq ft |
| Primary Brand | Pleatco |
| Part Number | PWWCT200 |
Fitment notes
Waterway Clearwater II 200 sq ft filter.