Pentair
Pentair FNS Plus Filter Fibergalass D.E. Filter
Achieve sparkling, crystal-clear pool water with the Pentair FNS Plus D.E. Filter. This system utilizes Diatomaceous Earth (D.E.) filtration to capture the smallest contaminants, down to 5 microns, including dirt and algae. It features curved vertical grids that maximize the filtration surface area, allowing for longer intervals between cleanings. The internal design promotes low flow restriction, saving on pumping power and utility costs. Constructed with a durable, chemical-resistant, fiberglass-reinforced polypropylene tank, this filter ensures long life and easy maintenance access via removable grid packs and a convenient drain.
$1200.00
Owner Satisfaction
4.5
/ 5
Category Rank
372
/ 1450
#372 in Pool & Spa Filters
Price vs Category Average
+669%
Above average
Filter Type
Diatomaceous Earth (DE), Grid
/ Diatomaceous Earth (DE), Grid
Who it's for
- Superior Water Clarity
- Robust Fiberglass Construction
- Efficient Backwashing System
Who should skip it
- Required D.E. Powder Replenishment
- Higher Initial Investment
- Specialized Disposal Requirements
Key Specs
Filter Type
Diatomaceous Earth (DE), Grid
Filtration Area
60 Square Feet
Maximum Flow Rate
120 Gallons Per Minute (GPM)
D.E. Volume Required
6.0 Lbs
Connection Size
2"
Material
Fiberglass-reinforced polypropylene
Micron Rating
5.0 microns
Application Type
In Ground Pool
Features
- D.E. filtration for sparkling clear water.
- Removes particles as small as 5 microns.
- Curved grids maximize filtration area.
- Durable, chemical-resistant tank.
- Easy maintenance with removable grid pack.
- High Flow air relief prevents over-pressurization.
- Low flow restriction saves energy.
- Attractive almond color blends in.
What customers say
Customers overwhelmingly praise the Pentair FNS Plus for its exceptional filtration, consistently achieving crystal clear water quality superior to standard systems. The robust fiberglass tank construction supports the premium price, suggesting excellent long term durability and reliability from a trusted brand. This filter is viewed as a high performance investment for those prioritizing the absolute best water clarity. A minor drawback noted by some users is the inherent maintenance of D.E. systems, specifically the backwashing process, which can be slightly more labor intensive than anticipated. Despite this, the consensus is that the superior results and longevity make it a worthwhile choice for dedicated pool owners.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$1200