Kerneed ultra-fine filter for Dolphin Nautilus CC Plus improves particle removal for a cleaner pool.
Kerneed four-pack filter set fits M200, M400, M500 and more.
Sturdy ABS frame adds durability during pool cleaning.
Washable design lets you reuse filters and save.
4-pack filters measure 10.5 by 6.3 inches.
Kerneed replacement filters offer budget-friendly, OEM-compatible replacement.

Kerneed

Kerneed Ultra Fine Filter 4-Pack for Dolphin Nautilus CC Plus, M400, M500 | Part 9991432-R4

High-performance patio lawn and garden made for confident daily results

$33.11

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Why customers choose PatioZora Garden

Upgrade your pool care with Kerneed’s Ultra Fine Filter 4-pack, designed to slot into select Dolphin robotic cleaners. This replacement set emphasizes enhanced filtration, durable construction, and easy maintenance to support steadier cleaning sessions and clearer water.

Wide compatibility makes this upgrade versatile for many Dolphin models, including M200, M400, M500, M4, and M5, along with Nautilus CC Plus. (Note: it is not compatible with Nautilus CC.) The Part 9991432-R4 designation helps you verify the correct fit for your unit.

Sharper filtration for crisper water

The ultra-fine element contains more pleats, increasing filtration efficiency so smaller particles are captured as the cleaner runs. Users often report less manual intervention between cleaning cycles and a more consistently clear pool water appearance.

  • Ultra-fine filtration targets finer debris that escapes standard cartridges
  • Pleated design expands surface area for steady water flow

Durable, reliable construction

A premium ABS frame delivers sturdiness and long-lasting performance, helping maintain hydraulic efficiency and structural stability across cleaning sessions and different water conditions.

  • Rigid frame resists cracking under routine use
  • Optimized for reliable cleaning with consistent flow

Easy maintenance and value

Washable and reusable, these filters offer a cost-conscious maintenance option. A quick rinse every 4–6 weeks helps sustain performance and extend service life.

  • Wash, rinse, and reuse to save on ongoing costs
  • OEM-compatible footprint for effortless swaps

What’s included

The pack contains four replacement filters with the same physical footprint as the OEM part. Each measures 10.5 inches by 6.3 inches, providing a budget-friendly, compatible option without sacrificing fit.

  • 4-pack replacement filters
  • Dimensions: 10.5" x 6.3"
  • OEM-compatible fit at a competitive price

For compatible Dolphin cleaners, Kerneed offers a practical upgrade that supports continued pool cleanliness with less downtime.

FAQ

Q: Which Dolphin models are compatible with Kerneed Ultra Fine Filter 4-Pack?

A: Compatible with Dolphin M200, M400, M500, M4, M5, Nautilus CC Plus; not Nautilus CC. Also fits Triton Plus, Bio, Sigma, Oasis Z5 and more.

Q: How should I maintain the Kerneed Ultra Fine Filter?

A: Rinse and wash every 4–6 weeks; reuse to save on water costs; ensure proper cleaning to maintain performance.

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