Ultra Fine Filters Compatible with Dolphin Nautilus CC Plus (Not for Nautilus CC), Nautilus CC Supreme, M200/M400/M500, Part # 9991432-R4, Pleated Pool Cleaner Replacement Part, 4 Packs

i did not feel the need to purchase a fine filter as the standard filters do a great job, i thought try it, i must tell you it was a noticeable difference, the product fit perfectly , worth the purchase

Excellent Quality, and they came through with same day delivery. Worked Fantastic! got all the fine dirt out of my pool, just in time for a big pool party! Thanks for a super product!

My Nautilus CC Plus pool robot came with the house. It had the "fine" screen filters. I did not know there were options. Those fine filters worked great, but really small stuff like filter sand go through the screen. I bought these after-market "ultra fine" filters, and am very happy! Excellent filtration. I was worried they'd be hard to wash out, but they are very easy to rinse out with the garden hose. TIP: Always rinse your filters immedately after removing the robot from the pool. Things are harder to clean once that stuff dries. Plus, it's nice knowing the robot is always ready for the next time you want to throw it in the pool.

Not sure why Dolphin does not include these as they are a must have during pollen season. I've used the set for only a few days now and each time I've cleaned them they are full of the green oak pollen, showing they are really doing the job. Before they arrived I brushed the pool daily and still had clouds of pollen each time. After using the new filters for a few days no more pollen clouds. They seem to be well built and the fit is perfect. I expect to get 2 or 3 years use before replacing.

A must have for getting your pool sparkling clean. The screens that are included with the cleaner will not pickup the small debris, but these high efficiency filters get it done.

Why did you pick this product vs others?: So far so good.

Can’t believe these weren’t original equipment on the pool robot. The original filters do not hold the fine material that is mostly the issue in my pool. This one does capture it.Been using them for about a year and they seem to be in good condition.

These fit our Nautilus Supreme pool vacuum perfectly and are the ultra fine filters that capture the smallest particles in the pool, as well as leaves and other debris. Very glad we bought them as the water cleared up quickly after using them as it filters water thru it very ably and removes even invisible contaminants from the pool water.