High-Performance D.E. Filtration
Pentair FNS Plus D.E. Filter
The Pentair FNS Plus D.E. Filter delivers outstanding water clarity for inground pools. D.E. filtration coats the internal grids with diatomaceous earth, creating a fine filtering surface that captures extremely small particles for cleaner, sparkling pool water.
Superior Water Clarity D.E. filtration helps trap fine debris down to approximately 2–5 microns.
Service-Ease Grid Pack Top manifold design allows convenient one-at-a-time grid servicing.
Durable Tank Construction Fiberglass-reinforced polypropylene body is made with chemical-resistant materials.
For Inground Pools Available in multiple filter sizes to match different inground pool applications.
Important Note Multiport valve is sold separately. FNSPL48 and FNSPL60 ship by common carrier freight and may require extra transit time.
FNS Plus Model Options
Choose the FNS Plus D.E. filter size that best matches your inground pool. Larger filtration area allows for greater dirt-holding capacity and longer cycles between service.
FNSPL36
36 Sq. Ft.
Filter Area: 36 Sq. Ft.
For Pools Up To: 43,200 Gal.
Valve: Sold Separately
FNSPL48
48 Sq. Ft.
Filter Area: 48 Sq. Ft.
For Pools Up To: 57,600 Gal.
Valve: Sold Separately
FNSPL60
60 Sq. Ft.
Filter Area: 60 Sq. Ft.
For Pools Up To: 72,000 Gal.
Valve: Sold Separately
A Closer Look Inside
The Pentair FNS Plus combines exceptional D.E. filtration performance with durable construction and an easy-to-service internal design. Every component is engineered to deliver sparkling water and dependable operation season after season.
Captures Tiny Particles
D.E. filtration captures particles as small as 2 to 5 microns for exceptionally clear and sparkling water.
Service-Ease Grid Pack
The unique grid assembly allows individual grids to be serviced one at a time, simplifying maintenance.
Curved Vertical Grids
Curved grid elements provide maximum filter area and excellent dirt-holding capacity.
High Flow Design
Internal plumbing is engineered to maximize water flow while minimizing restriction.
Built To Last
Fiberglass-reinforced polypropylene construction provides outstanding durability and chemical resistance.
Long Cleaning Cycles
Large filter area and efficient grid design help extend the time between cleanings and maintenance.
Important Add-On
Don’t Forget The Multiport Valve
The Pentair FNS Plus D.E. Filter does not include a multiport valve. Be sure to add the correct valve for your plumbing setup so installation goes smoothly and your filter can backwash, rinse, and operate properly.
Note: Multiport valve is sold separately. Match the valve to your filter model and plumbing configuration before checkout.
**FNSPL60 & FNSPL48 - These items ship by common carrier freight. Please allow an extra 5 days to arrive.
