Spa Filter Cartridge Replacement PWW35L 4CH-935 PMA-R3
Spa Filter Cartridge Replacement PWW35L 4CH-935 PMA-R3
Crystal-Clear Water Starts with the Right Filter
Keep your spa or swimming pool sparkling clean with this high-performance Replacement Spa Filter Cartridge, compatible with PWW35L, 4CH-935, and PMA-R3 filter systems. Engineered with premium trilobal filtration fabric, this cartridge delivers superior debris capture — removing leaves, hair, sand, oil, and fine particles to maintain pristine, crystal-clear water all season long.
Key Features
- High-End Trilobal Filtration Fabric: Dense, high-quality material captures up to 3x more debris than standard filter options, keeping water cleaner for longer.
- Efficient All-Around Filtration: Effectively traps leaves, hair, sand, fine dust, and oils — ideal for both spas and swimming pools.
- Direct Replacement Fit: Designed as a drop-in replacement for PWW35L, 4CH-935, and PMA-R3 filter systems — no modifications needed.
- Durable Construction: Measures approximately 8½ inches, built to withstand regular use and maintain consistent water flow.
- Easy Maintenance: Simple to remove, rinse, and reinstall, making pool and spa upkeep quick and hassle-free.
- Great Value: A cost-effective way to extend the life of your spa or pool filtration system and protect your equipment.
Specifications
- Compatible Models: PWW35L, 4CH-935, PMA-R3
- Material: Premium Trilobal Filtration Fabric
- Size: Approx. 8½ inches
- Application: Spas, Hot Tubs, Above-Ground Swimming Pools
Why Regular Filter Replacement Matters
Maintaining a clean filter is one of the most important steps in pool and spa care. A clogged or worn filter reduces water circulation, strains your pump, and allows contaminants to build up. Replacing your filter cartridge regularly ensures optimal water quality and protects your investment. For more guidance on pool and spa water safety, visit the CDC Healthy Swimming resource.
Frequently Asked Questions
Q: Which spa and pool filter systems is this cartridge compatible with?
A: This replacement spa filter cartridge is designed to be fully compatible with PWW35L, 4CH-935, and PMA-R3 filter systems. It is a direct drop-in replacement, requiring no tools or modifications for installation.
Q: What makes the trilobal filtration fabric better than standard filter material?
A: Trilobal filtration fabric features a higher thread density and a unique three-lobed fiber structure that captures significantly more debris — including fine particles like sand and oils — compared to standard flat-fiber filter material. This means cleaner water and longer intervals between cleanings.
Q: How often should I replace my spa or pool filter cartridge?
A: Generally, spa and pool filter cartridges should be rinsed every 2–4 weeks and fully replaced every 12–24 months, depending on usage frequency and water conditions. Regular replacement ensures peak filtration performance and protects your pump from strain.
Q: Can this filter cartridge be rinsed and reused?
A: Yes, this cartridge can be rinsed with a garden hose between uses to remove accumulated debris and extend its service life. For a deeper clean, periodic soaking in a filter cleaning solution is recommended before an eventual full replacement.