Pentair FNS Fiberglass D.E. Filters

Micro-Filtration for Macro-Clarity.

Discover the power of the Pentair FNS Fiberglass D.E. Filter.

Filtering with diatomaceous earth (D.E.) gives you water that really sparkles. That's because D.E. filters remove the tiniest of contaminant particles as small as 5 microns. (An average grain of sand is 1000 microns!) Even though these particles can't be seen individually, collectively they greatly affect water clarity. Here's why diatomaceous earth filters work so well. Water passes through a series of D.E. coated grids. Under a microscope, D.E. looks like a collection of tiny sponges. And just like a sponge, water can pass through, but microscopic impurities like dirt, algae, and some forms of bacteria can't. These filters have been designed with curved grids to maximize filtration area. More filter area means better performance and longer periods between cleanings. Our exclusive internal design has been refined to minimize flow restrictions, and therefore requires minimal pumping power to achieve a needed flow rate. That means lower utility costs.

In addition to providing the clearest water possible, FNS was also designed for easy maintenance and long-term reliability. So you can count on it to keep your pool water clean and crystal clear for years to come.

Pentair FNS Features:

• Corrosion-resistant fiberglass tank for long life.
• Top-to-bottom backwashing for optimum cleaning efficiency and sustained filter performance.
• Stainless steel tank clamp for secure closure of tank halves.

Proprietary design for lower maintenance and higher efficiency.

The FNS D.E. filter features our exclusive internal design that produces optimum filtration efficiency and extends the time between cleanings. This design also ensures the most thorough backwashing possible, so your filter is restored to peak performance time after time.

• Curved vertical filter grids provide maximum filter surface area for the most efficient filtration available.
• Innovative interior design.grid assembly with molded-in handles lifts out easily for inspection and periodic cleaning.
• Easily accessible 2" drain for efficient cleanout.
• 2" plumbing connections for maximum flow and filtration efficiency.
• One-year limited warranty.

Download the Owner's Manual (PDF)

Pentair FNS Fiberglass D.E. Filters Buying Guide