About This

• PRECISION FIT FOR - Spa Filter Cartridge Waterway Teleweir 35 SF - 4PK - Compatible with 817-4035, Pleatco PWW35L, Unicel 4CH-935 with a snug and secure fit to ensure quality performance.
• DIMENSIONS FOR RELIABLE FIT - This cartridge is engineered to fit seamlessly into compatible spa filtration systems, supporting consistent performance without leaks or gaps.
• TRILOBAL DIRT-LOCK MEDIA – Advanced trilobal fibers capture up to 40% more debris than standard round fibers, trapping dirt, hair, leaves, and fine particles while maintaining maximum water flow.
• TESTED TO NSF 50 STANDARDS – Independently tested to NSF protocols for performance and durability, supporting consistent water clarity and reliable filtration.
• ENGINEERED FOR CONSISTENT FLOW – Internal high-flow core delivers steady water circulation, protecting pump performance without restricting pressure or causing heater issues like some filters.
• QUICK RINSE, LONG-LASTING FILTRATION - Engineered pleats resist collapse and wash clean easily, with this 8-1/2" × 5" cartridge providing extended clarity and reliable flow for your system.