FNS® Plus

Fiberglass D.E. Filter

By Pentair Pool Products®

The filter that delivers crystal clarity

Filtering with diatomaceous earth (D.E.) gives you water that really sparkles. That’s because D.E. filters remove the tiniest of contaminants…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.

FNS® Plus D.E. 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 possible water, FNS Plus was also designed for easy maintenance and long-term reliability. So you can count on it to keep your pool’s water clean and crystal clear for years to come.

●Curved vertical grids provide maximum filter surface area for greater dirt-trapping capacity and longer periods between cleanings.

●Unique internal design ensures optimum filtration and backwashing efficiency.

●Chemical resistant, fiberglass reinforced polypropylene tank for exceptional strength and long life.

●Easily removable filter grid pack to simplify maintenance and save you time.

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Pentair FNS Plus manual Filter that delivers crystal clarity, Fiberglass D.E. Filter
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FNS Plus specifications

The Pentair FNS Plus is a high-performance swimming pool filter designed to provide exceptional clarity and cleanliness for both residential and commercial pools. Renowned for its efficient DE (diatomaceous earth) filtration, the FNS Plus is engineered to tackle dirt and debris, ensuring your pool water remains crystal clear.

One of the main features of the Pentair FNS Plus is its unique grid design, which offers an increased surface area for optimal filtration efficiency. This design allows the filter to capture and retain even the smallest particles, ensuring your pool stays clean for longer periods. With a large filter area, the FNS Plus has a higher dirt-holding capacity, which means it requires less frequent cleaning. This is particularly advantageous for pool owners looking to minimize maintenance time.

Another key characteristic of the FNS Plus is its advanced hydraulic technology. The filter features a unique top mount valve that allows for easy operation, enabling users to switch between filtration and backwashing seamlessly. This user-friendly design ensures that maintaining clean pool water is straightforward and efficient, even for those less experienced with pool care.

Additionally, the Pentair FNS Plus incorporates rugged materials and a durable construction that is built to withstand harsh conditions. Its corrosion-resistant body is designed to endure exposure to chemicals and the elements, ensuring a long lifespan and reliable performance.

The FNS Plus also features a sight glass, which allows pool owners to easily monitor the filtration process. This transparency helps users know when it is time to backwash the filter or perform maintenance, further enhancing convenience.

Moreover, the filter is compatible with both above-ground and in-ground pool installations, making it a versatile choice for various pool types. Setting up the FNS Plus requires minimal effort, and its thoughtful design supports ease of installation and operation.

In summary, the Pentair FNS Plus stands out as a top-tier filter, combining an effective DE filtration system with user-friendly features and durable construction. Its innovative design and reliable performance make it an excellent choice for those seeking to maintain a clean and inviting swimming environment. Whether for residential or commercial use, the FNS Plus delivers exceptional results, ensuring your pool remains a sparkling oasis.
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