PAS50
50 sq ft replacement filter cartridge • 7.125″ OD × 8.75″ long
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PAS50 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 | PAS50 | Primary |
Always verify dimensions and end-cap type before purchasing a replacement.
Frequently Asked Questions
What are the dimensions of the PAS50?
The PAS50 is 7.125 inches in outer diameter, 8.75 inches long, with a handle top and an open bottom. Total filtration area is 50 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 PAS50?
PAS50 is the same physical cartridge as . Same dimensions (7.125" × 8.75"), same handle 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.
How often should I replace the PAS50?
Most filter cartridges last between 12 and 24 months. Pull the PAS50 every few months for a hose rinse, soak it in cleaner quarterly, and replace it when the pleats are torn, channeling, or won't come clean. Bather load, water chemistry, and how often you actually clean it all matter more than the calendar.
How do I clean the PAS50?
The PAS50 has a built-in handle on top, which means you can pull it without touching the media. 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 (or at every water change, whichever comes first), do a deep clean: overnight soak in a hot tub filter cleaner, then a thorough rinse. If your cartridge has a closed end cap, let it dry before reinstalling so you don't trap moisture inside the cartridge core.
Which hot tubs and spas use the PAS50?
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 | 7.125″ |
|---|---|
| Length | 8.75″ |
| Top Type | Handle |
| Bottom Type | Open (no end cap) |
| Filtration Area | 50 sq ft |
| Primary Brand | Pleatco |
| Part Number | PAS50 |
Fitment notes
Handle top with a 2-5/8 inch keyed bottom opening. Pleatco lists it as an upgrade cartridge for newer Artesian spas. The PAS50-F2M is the same 7-1/8 by 8-3/4 inch body with Pleatco's 2 inch male NPT adapter fitted into that bottom, so match the bottom fitting on the cartridge you are replacing. Do not confuse either with the PAS50SV-F2M, which is the short version at 6-3/4 by 8 inches. Neither Unicel nor Filbur publishes an equivalent and Pleatco prints no OEM number, so these dimensions have no second sheet to check them against.