Hot Tub Filter Replacement for Jacuzzi, Unicel, Filbur, Pleatco, 50 sq. ft, 2 Pack

When Searching for the Right Filter Replacement, Follow These Steps 1. If you know the part number of your existing filter cartridge, check if it is listed below: - Pleatco: PRB50-IN, PRB50-IN-M - Jacuzzi: J210, J220, J235, J245, J275 - Filbur: FC-2380, FC-2370, FC-2392, FC-2375, FC-2375M, FC-2390, FC-2390M - Guardian: 413-212-02, 373045, 817-5000 - Pentair: Rainbow Dynamic 50, R172380, R173434, 03FIL1600, II&III RTL-50, II&III RCF-50, IV DFML, IV DFM, I RDC-50 - Spa Daddy: SD-00201, SD-00455 - OEM: 03FIL1600, 373045, 100533, 6540-471, 17-2380, 25391, 817-5000 - Unicel: C-4950, C-4950RA, C-4326, C-4326AM, C-4625, C-4637 - Aladdin 15002, Pure N Clean PC-2390, Baleen AK-3049, Darlly 40506, Excel Filters XLS-408, Harmsco H-4950, Magnum RD50, Waterway 817-5000, Sundance 6540-471, Coleman 3301-2145, RTL-50, 435-0037, R173434, Beachcomber 3005815

1. If you know your pool or spa's model number, check if it is compatible with the following:
2. South Seas Spa: 965L, 860B, 860L, 853DL, 850B, 850L, 834B, 834L, 766D, 748B, 748L, 743D, 729B, 729L, 627M, 627C, 617C, 533DL, 532L, 521L, 519P
3. Jacuzzi J200 Series Spas
4. Sundance 680 Series Spas

The information provided about manufacturers' names and part numbers is for compatibility reference only, and they remain the property of their respective holders.

Measuring Your Filter for Replacement If you don't know the replacement part number, measure the filter as follows: a. Measure the outside diameter of the cartridge in inches (± 1/16). b. Measure the overall length of the cartridge in inches (± 1/16), excluding any handles or strings. c. If the top and/or bottom is open, measure the inside diameter of the opening (± 1/16 inch). If the end cap is closed, note its identifying features (e.g., "Handle," "Cone," etc.).

Ensuring Quality and Longevity The filter cartridge's end caps are sturdy, resistant to melting or cracking. The increased number of pleats provides maximum filtration efficiency for a sparkling clean pool. The molded strong core ensures maximum hydraulic efficiency and overall structural stability. The plug-and-play design makes replacement a breeze.

When to Replace Your Filter Cartridge - High Water Pressure: If the running pressure of your filtration system climbs and doesn't decrease after a deep cleaning, it's time to replace the cartridge. - Cracked End Caps: Replace the cartridge immediately if the end caps have become brittle, cracked, or chipped to prevent damage to your system. - Torn Pleats: If the filter fabric is torn or fuzzy, the cartridge's effectiveness has been compromised, and it should be replaced. - Crushed Cartridge: When the inner structure is compromised, making the cartridge look like a crushed can, it's time for a replacement.

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