Maytronics Dolphin Ultra Fine Filter Kit | 9991466-R4
Maytronics
SKU: 9991466-R4
Maytronics 9991466-R4 Ultra-Fine Filter Panels (4 Pack) for Dolphin Robotic Pool Cleaners | Genuine Replacement
The Maytronics 9991466-R4 is a genuine Dolphin ultra-fine debris filter panel kit designed for select Maytronics Dolphin robotic pool cleaners. This replacement set includes 4 ultra-fine filter panels (cartridge-style panels) that help capture fine debris such as dust, silt, sand, and other small particles for improved water clarity.
Key Features
- Part number: 9991466-R4
- Brand: Maytronics (Dolphin genuine part)
- Product type: Ultra-fine replacement filter panels / cartridges
- Quantity: 4-pack
- Filtration type: Ultra-fine debris capture for small particles
- Helps improve water clarity by trapping fine dirt and sediment
- Commonly listed warranty: 1 year (listing/manufacturer dependent)
What This Part Does
- Replaces worn, clogged, or damaged filter panels in compatible Dolphin cleaners
- Captures fine debris that coarser filters may miss
- Helps maintain cleaner performance and debris retention
- Supports easier routine maintenance with removable/rinseable filter panels
Common Compatibility Notes (Verify Before Ordering)
- Commonly listed for select Dolphin S-series / E-series / entry-level cartridge-filter models
- Frequently referenced models include: S50, Active 10, T15, Explorer E10/E20, Nautilus CC, Echo, Escape, Cayman, Encore, Proteus DX3, and select related variants (model/version dependent)
- Some listings also reference compatibility with certain branded equivalents such as Pentair Prowler 910 (verify exact model/version)
- Always verify your cleaner model and existing filter part number before ordering
Important Notes
- This is an ultra-fine filter set intended for finer debris capture; flow may reduce faster in heavy leaf debris conditions compared to coarse filters.
- For best performance, rinse the panels after each cleaning cycle (or more often during dusty/heavy debris conditions).
- Confirm your cleaner uses the panel-style cartridge filter system compatible with this part number.
Use & Care Notes
- Install all panels correctly in the filter basket/frame according to your Dolphin cleaner manual.
- Rinse thoroughly with a hose after each use to remove trapped debris.
- Do not allow debris to dry and harden in the pleats/mesh.
- Inspect panel frames and mesh regularly for cracking, tearing, or deformation.
- Keep a spare clean set on hand for faster turnaround between cleaning cycles.
Related Products (Aqua Pool Supply)
- Maytronics 9991466-R4 Ultra-Fine Filter Panels (Search)
- Dolphin Filter Cartridges & Panels (Search)
- Dolphin Nautilus CC Parts (Search)
- Dolphin E10 Parts (Search)
- Robotic Cleaner Filter Cleaning Supplies (Search)
Maintenance Tips
- Rotate between two filter sets to reduce downtime and extend filter life.
- Rinse immediately after use to prevent fine sediment from clogging the media.
- Inspect seals and filter basket fitment if you notice debris bypass.
- Replace panels when mesh/media becomes damaged or filtration performance declines.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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