Pentair FNS® Plus 60 Sq Ft D.E. Filter
The Pentair FNS® Plus 60 Sq Ft D.E. Filter is the largest model in the FNS Plus line — 60 sq ft of curved grid D.E. filtration for maximum residential capacity, longer cleaning intervals, and the finest water clarity available. Curved grids maximize filtration area while refined internal hydraulics minimize flow restriction and pumping power requirements. Built with fiberglass-reinforced polypropylene for superior strength and reliability.
Features the Service-Ease™ grid pack, top-to-bottom backwash, Tension Control™ clamp, Continuous High Flow™ internal air relief, and black valves and plumbing. ANSI Standard 50 certified. Backed by a 2-year warranty.
Key Features
60 Sq Ft — Largest FNS Plus Model
Maximum filtration area in the FNS Plus line — more grid area means longer cleaning intervals and better performance under heavy bather loads.
Finest Filtration Available
D.E. filtration removes particles down to 3–5 microns — the clearest water achievable from any residential filter type.
Service-Ease™ Grid Pack
Grid assembly lifts out as a single unit for faster, simpler annual teardowns and cleaning.
Curved Grid Design
Curved grids maximize usable filtration area for better performance and fewer cleanings.
Top-to-Bottom Backwash
Efficient backwash cycle cleans all grids thoroughly from top to bottom.
Continuous High Flow™ Internal Air Relief
Integrated automatic air relief plus manual High Flow™ valve for system priming and maintenance.
Tension Control™ Clamp
Secure, easy-to-operate clamp band for tank access.
Low Pumping Power Required
Refined internal hydraulics minimize flow restriction — more filter performance per watt of pump energy.
ANSI Standard 50 Certified / 2-Year Warranty
Certified performance and Pentair's 2-year residential warranty.
Who It's For
- Pool owners with larger pools or heavier bather loads who want maximum D.E. filter capacity
- Anyone who wants the longest possible cleaning intervals from a D.E. filter
- Pools where the 36 or 48 sq ft FNS Plus models are undersized
- Pentair system users wanting brand-matched D.E. filtration at maximum residential capacity
Specifications
Performance
| Filtration Area | 60 sq ft |
| Filter Type | Vertical-Grid D.E. |
Tank & Plumbing
| Tank Material | Fiberglass-Reinforced Polypropylene |
| Bulkhead Fittings | 7-1/2 in centerline |
| Clean-Out Port | 1-1/2 in bottom |
| Valve / Plumbing Color | Black |
Physical
| Product Weight | 90 lb |
| Shipping Dimensions | 22 × 22.5 × 50 in |
Approvals & Warranty
| Certifications | ANSI Standard 50 Certified |
| Warranty | 2 Years |
What's in the Box
- Pentair FNS Plus Filter Tank with Curved Grid Pack
- Tension Control Clamp
- User Manual
Note: Diatomaceous earth (D.E. powder) is not included and must be purchased separately.
Warranty
The Pentair FNS Plus 60 sq ft D.E. Filter comes with a 2-year manufacturer warranty. Clearflow Pool Supply is an authorized Pentair dealer and will assist with any warranty service needed.
Downloads
Frequently Asked Questions
How does the 60 sq ft FNS Plus compare to the 48 sq ft model?
Both are FNS Plus curved-grid D.E. filters with identical features and 2-year warranties. The 60 sq ft model has 25% more grid area than the 48 sq ft — providing longer intervals between cleanings and better performance under heavier loads. It also ships taller (50 in vs. 45 in) and weighs more (90 lb vs. 76 lb). Choose the 60 sq ft for the largest residential pools or when maximum intervals between cleanings are the priority.
How much D.E. powder does this filter require?
The FNS Plus 60 sq ft typically requires approximately 9 lb of D.E. powder after backwashing or reassembly. Always follow the specific amount in the owner's manual and use pool-grade diatomaceous earth.
What is the Service-Ease grid pack?
The Service-Ease grid pack assembles all filter grids into a single unit that lifts out together rather than removing each grid individually. This makes annual teardowns and thorough cleanings significantly faster and less cumbersome — particularly important with the larger 60 sq ft grid set.