Beckacher 4-Pack Ultra Fine Filters for Dolphin Nautilus & M-Series – 9991432-R4

Overview

Beckacher offers a practical four-pack of ultra-fine pool cleaner filters designed as a budget-friendly upgrade for select Maytronics Dolphin cleaners. These replacement panels are built to slot into compatible housings quickly, helping you maintain clean pool floors with less downtime between cleanings. While not compatible with every older Nautilus model, they align with a broad range of Dolphin units, offering a straightforward option when a current cartridge starts to show wear or clog more easily.

What’s Included

• Four ultra-fine pleated cartridge panels, each sized at 10 1/2 x 6 3/8 inches
• Replacement part number 9991432-R4 for easy catalog reference
• Packaged for quick swap-outs; designed to perform as a cost-effective OEM-like alternative
• Durable construction intended for repeated use across multiple cleaning cycles

Why It Matters

The pleated design increases surface area, helping capture smaller particles more effectively than non-pleated options. The dense filtration supports clearer pool water by reducing fine debris that can otherwise resettle after cleaning. A sturdy ABS frame provides rigidity during vacuuming, contributing to reliable performance over time. When cared for properly, the filters can be rinsed and reused, delivering long-term value without sacrificing filtration quality.

Compatibility & Installation

Full compatibility is listed for models including Dolphin Nautilus CC Plus (Not for Nautilus CC), Nautilus CC Supreme, and M-series units such as M200, M400, and M500. The pack is designed to replace Maytronics part # 9991432-R4 and can support broader configurations like Supreme M4/M5, Sigma, Odyssey, Oasis Z5i, Oasis Z5, Wave 60/65, Wave 80/90, C3, C4, Bio, and related lines. Not compatible with older Nautilus CC or Triton models. The four panels swap out quickly, helping you minimize downtime during maintenance.

Care & Longevity

• Rinse the pleated panels with a garden hose every 4–6 weeks for best performance
• Allow filters to dry completely between uses to extend life and prevent mold
• Inspect the ABS frame for signs of wear and replace if needed to maintain fit and seal

Better Pool Care, Made Simple

This Beckacher filter set is designed to offer a practical balance of performance, durability, and value. The ability to swap in seconds, combined with a reusable design, makes it a convenient option for regular pool maintenance. While results can vary with pool conditions and usage, many users appreciate the potential for cleaner water and easier upkeep when these filters are in regular rotation.