The Pleatco PRB35 is a popular replacement filter cartridge for hot tubs and spas. Here are some key details about the Pleatco PRB35 filter:
Attention Customers: Part Number and Filter Appearance Changes. Last year, Pentair Pool purchased Pleatco. Since then, they have made some changes in part numbers and materials. The filters are now manufactured with Microban. Other than that, the filter quality is the same, if not better.
Pleatco PRB35-IN (old part number)
Pleatco X15-ULT-S7-M (new part number)
Pleatco X15-ULT-S7-M (new part number)
- Length: Approximately 9-1/4" (23.5 cm)
- Diameter: 4-15/16" (about 5")
- Top and Bottom: Both have 2-1/8" open holes (open core)
- Filtration Area: 35 square feet
- Material: Reemay spunbond polyester
- Commonly Used In: Many spa and hot tub brands, including Jacuzzi, Sundance, Dynasty Spas, and more
Replacement For:
- Unicel C-4335
- Filbur FC-2385
- OEM part numbers for various spa brands
Usage Tips:
- Clean your filter every 2-4 weeks (depending on use and water conditions)
- Replace the filter every 12-18 months, or as recommended by your spa manufacturer.
*Microban is an antimicrobial technology that is integrated into various products—such as filters, plastics, textiles, and coatings—to help prevent the growth of bacteria, mold, and mildew on treated surfaces. In the context of pool and spa filters like the Pleatco PRB35, Microban is added to the filter material during manufacturing.
Key points about Microban:
- It works by disrupting the vital life processes and biological functions of microbes, making it difficult for them to grow and reproduce.
- Microban protection is built into the product and remains effective throughout the product’s life.
- It helps keep filters cleaner and fresher for longer, potentially reducing odors and extending their usable lifespan.
- It does not replace regular filter maintenance or cleaning, but it adds an extra layer of protection against microbial growth.
