The System 3 Service Pros Count On.
High-Capacity Filtration. Professional-Grade Performance.
Serious filtration demands a serious replacement cartridge. OnCore Filtration™ System 3 Premium Filter Cartridge Sets are engineered for the high-capacity demands of System 3 filtration, combining a true dual-cartridge design, commercial-grade flat bond media, and staggered-support Open-Flow Cores to deliver exceptional water clarity, optimized flow, and reliable performance under pressure.
Designed as a true System 3 replacement, with no adapter plates or spacers, the two-cartridge system provides staged filtration for everything from larger debris to fine dirt and algae. Its advanced filtration media helps minimize clogging and extend cleaning intervals, while the quick-cleaning design makes rinsing and routine maintenance easier. The result is serious filtration performance with the fit, durability, and serviceability professionals need in the field.
Exact System 3 Fit
True Two Cartridge Design.
Engineered for an exact System 3 fit with no adapters or manifold plate required. The dual-cartridge design provides staged filtration, where coarse filtration captures larger debris like dirt and algae, while fine filtration targets smaller particles. The result is exceptional water clarity, extended cleaning cycles, and high-flow performance in a true System 3 replacement.
Commercial Grade, Industry Standard.
Flat Bond Filtration Media.
Made with commercial-grade, fine-denier polyester media using advanced spun-bond technology for even fiber distribution and dependable filtration. Its advanced open-weave structure helps minimize clogging and slow filter cake formation, extending service intervals with fewer cleanings while maintaining reliable performance.
Protected Partner Network
Staggered Support Cores.
Unique injection-molded, staggered-support cores maximize water flow across the filtration media for enhanced efficiency and debris capture. Engineered for strength under pressure, the cores work across both cartridges to provide balanced, high-performance filtration and optimized flow.
Your Name Is On Every Pool You Service.
Your customers don't remember media weights. They don't remember micron ratings.
They remember one thing. Did the pool stay clean?
Every OnCore Pool & Spa Filter Cartridge is built to trade-grade standards, combining precision-engineered fit, premium filtration media and rugged core construction to deliver reliable performance from installation through to the next scheduled service. That's how OnCore helps you earn lasting customer loyalty.
Because every clean pool builds your reputation.
ONCORE. PROTECTING YOUR TIME. YOUR CUSTOMERS. YOUR REPUTATION.
SECURE YOUR MARGINS. WHERE TO BUY.
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