• Professionalpoolandspa@yahoo.com
  • (818) 248-1320

Pentair FNS Plus D.E. Filter

It use to be that pool filters were stainless steel and would last forever. That has changed. Stainless steel isn’t as good as it use to be. It now rusts and cracks. They then started to make filters out of fiber glass, but the fibers would break down in the UV light from the sun. Now most filters are made of some kind of plastic mold. The cheapest filter is the Hayward D.E. filter. This filter is prone to cracking in the tank.

Jandy filters are expensive and hard to clean due to the clamps. Pentair makes many kinds of filters. The best and most popular filter is the FNS Plus.

The FNS Plus filter is easy to clean. I never have seen one crack at the tank. The backwash valve is on the outside of the tank and is easy to repair. All the grids lift out in one piece when cleaning the filter. The grids will last longer if you just leave it connected to the top & bottom manifold and clean as one piece.

You only have to disassemble the grids when one breaks or rips due to age. D.E filters filter the best. They filter more microns than cartridge or sand filters. The FNS Plus comes with a 1-year warranty on parts & labor. Pentair offers up to 3-years warranty on all equipment. The way this works is you get 1-extra year per equipment item installed at the same time, up to 3 years.

  • D.E. Filter
  • FNS
  • Plus Filters
  • Fiberglass Reinforced Polypropylene Material, Vertical Grid, D.E.

FNS Plus Filters are fiberglass reinforced polypropylene of advanced chemical resistant materials for superior strength and reliability. The top manifold design features the Service-Ease grid pack for convenient one-at-a-time grid servicing.


  • Superior strength
  • Service-Ease grid Pack
  • Continuous High Flow internal air relief
  • 100% factory tested
  • Top-to-bottom backwash
  • High Flow manual air relief valve
  • Tension Control clam
  • Black valves and plumbing
  • 1-1/2in. bottom clean out port
  • 7-1/2in. centerline bulkhead fittings



Follow Us on Social Media

    Angies List

    Facebook Instagram Yelp

Now on Facebook!

    Unable to display Facebook posts.
    Show error

    Error: Error validating access token: Sessions for the user are not allowed because the user is not a confirmed user.
    Type: OAuthException
    Code: 190
    Subcode: 464
    Please refer to our Error Message Reference.