The Pentair FNS Plus DE Pool Filter is built to keep your pool equipment running the way it should.

The Pentair FNS Plus DE Pool Filter 180009 is engineered to provide exceptionally clear, sparkling pool water using the superior filtration performance of diatomaceous earth (DE). With a 60 sq ft filtration area, this FNS Plus model is ideal for medium to large pools that demand top-tier water clarity.

Built with a heavy-duty injection-molded tank, corrosion-resistant components, and a reinforced internal grid assembly, the FNS Plus series is designed for long-lasting reliability. The filter’s curved grid design improves dirt-holding capacity, reduces maintenance frequency, and maximizes filtration efficiency—capturing even the finest particles as small as 2–5 microns.

The easy-to-access top manifold design allows quick cleaning and servicing, while the efficient flow system helps reduce energy costs when paired with variable-speed pumps. Whether for residential or commercial use, the FNS Plus 180009 provides unmatched clarity and professional-grade performance.

Trusted by pool professionals — order the Pentair FNS Plus DE Pool Filter today and ship it fast.