Tier1 Replacement Spa Filter Cartridge for Marquis PPM35SC — 12-3/16"×5-1/4", Trilobal High-Flow

The Tier1 Replacement for Marquis Spa PPM35SC is a direct-fit spa filter cartridge sized 12-3/16" × 5-1/4" that uses trilobal dirt-lock fibers and a high-flow core to trap more debris while maintaining steady circulation.

Keep your hot tub water clear and your equipment running smoothly with a replacement cartridge that fits popular spa filter housings. This Tier1 cartridge is engineered to match the Marquis PPM35SC form factor and cross-references common OEM part numbers so you can replace the old element without guessing. It combines upgraded media with an internal high-flow core, and it has been independently tested to NSF 50 protocols to confirm performance and durability.

How does this cartridge capture more debris without restricting water flow?

The filter uses trilobal dirt-lock fibers that create more surface area and mechanical trapping points than conventional round fibers. That design captures fine particles like hair and silt while allowing water to pass efficiently through the pleats. An internal high-flow core keeps circulation consistent so pumps and heaters operate without undue strain.

• Trilobal fibers increase debris capture by up to 40% versus round fibers.
• Pleated construction maximizes filtration area in a compact cartridge.
• High-flow internal core preserves steady pump and heater performance.

Will this Tier1 filter fit my spa that used a Marquis PPM35SC?

Yes — the cartridge dimension of 12-3/16" × 5-1/4" matches the Marquis PPM35SC footprint and several equivalent replacement numbers. It’s designed for a direct swap in compatible housings, eliminating the need to modify seal seats or adaptors. Always compare dimensions and model references during purchase to confirm compatibility.

• Exact size: 12-3/16" height by 5-1/4" diameter for reliable fit.
• Cross-references: Pleatco PPM35SC-F2M, Filbur FC-0195, Unicel 5CH-352, and others.
• Drop-in replacement—no trimming or special tools required when matched correctly.

What testing or standards back the Tier1 replacement cartridge?

This cartridge has been independently evaluated to NSF 50 performance protocols, which assess filtration effectiveness and durability in recreational water systems. NSF testing helps verify that materials and construction meet industry expectations for pool and spa filtration. While testing supports reliable performance, routine maintenance remains essential for optimal water quality.

• Tested to NSF 50 procedures for filtration performance and longevity.
• Durable pleats resist early collapse and help extend cartridge life.
• Engineered materials balance capture efficiency with consistent flow.

How should I care for this filter cartridge to get the best lifespan?

Regular rinsing and periodic deep cleaning will keep the cartridge operating at peak efficiency. Remove loose debris with a garden hose between uses and soak in an appropriate filter-cleaning solution according to the cleaner’s directions every few months or as water conditions dictate. Replace the cartridge when pleats show permanent staining, damage, or when flow declines despite cleaning.

• Rinse with an angled spray to remove surface debris after each use.
• Deep clean with a compatible cartridge cleaner every 3–6 months.
• Inspect pleats and endcaps; replace when visibly worn or flow is reduced.

Who is this for: The Tier1 Replacement for Marquis Spa PPM35SC is ideal for spa owners who need a reliable, direct-fit cartridge that boosts debris capture without compromising circulation. It’s a good choice for people replacing older OEM cartridges, owners of compatible spa models listed among the cross-references, and anyone who prefers an NSF-tested aftermarket option to maintain clearer water and steady equipment performance.