TUOWS 9991432-R4 4-Pack Replacement Filter for Dolphin M400/M500 & Nautilus CC Plus

Overview and compatibility

Discover the TUOWS four-pack replacement filter set, designed to align with Dolphin M400/M500 and Nautilus CC Plus robotic pool cleaners. This Part # 9991432-R4 bundle provides ready-to-use cartridges that help maintain consistent cleaning performance. Note that this filter is not intended for Nautilus CC or Nautilus CC Pro models.

With the 4-pack format, you can keep spares on hand for faster swaps between cleaning cycles, reducing downtime and helping you stay on top of weekly pool maintenance as seasons change.

Efficient filtration with durable materials

The cartridge uses enhanced PET fiber material woven into a diamond-grid structure. This design aims to balance strong filtration with durability, helping to withstand regular debris and routine use during pool care. The filter is configured as a 3-layer system to add depth to filtration, capturing a range of particles while maintaining smooth water flow.

What you get in the 4-pack

• Four replacement cartridges ready to install, reducing downtime between cleanings
• Part # 9991432-R4 compatible with Dolphin M400/M500 and Nautilus CC Plus
• Not compatible with Nautilus CC or Nautilus CC Pro models
• Three-layer filtration with PET fiber and a diamond-grid weave for robust performance

Material highlights and design benefits

The PET fiber material is chosen for durability and filtration efficiency, while the diamond-grid weave adds resilience against wider debris. The three-layer construction provides depth filtration, helping to trap particles at multiple sizes without overly restricting water flow.

Usage tips, care, and maintenance cadence

For best results during installation, turn off the cleaner, remove the old cartridge, check the seal, and seat the new cartridge firmly. Rinse the cartridge after use to remove surface debris, and allow it to dry before storing to extend its life. Keeping a spare on hand makes it easier to swap in during routine maintenance without interrupting cleaning schedules.

Practical use scenarios

• Ensuring quick cartridge swaps between scheduled cleanings
• Maintaining consistent suction and cleaning performance with regular replacement
• Managing debris from routine pool use and seasonal changes

Compatibility and model notes

Fits Dolphin M400/M500 and Nautilus CC Plus robotic pool cleaners, not intended for Nautilus CC or Nautilus CC Pro. Use as a reliable 4-pack option when you want ready-to-install replacements to keep your cleaner ready for action.