Pentair
Pentair FNS Plus DE Filter, 48 sq ft
Engineered for superior strength and reliability in inground pools, the Pentair FNS Plus DE Filter offers advanced filtration. Its chemical-resistant fiberglass reinforced polypropylene construction and top manifold design simplify maintenance with convenient, one-at-a-time grid servicing. This filter system ensures efficient operation with a continuous high flow internal air relief and top-to-bottom backwashing capability. Designed to provide exceptional clarity for your pool water, it's a robust solution for maintaining a pristine swimming environment. Please note that the required multiport valve is sold separately.
$1199.99
Owner Satisfaction
4.5
/ 5
Category Rank
372
/ 1450
#372 in Pool & Spa Filters
Price vs Category Average
+669%
Above average
Material
Fiberglass reinforced polypropylene
/ Fiberglass reinforced polypropylene
Who it's for
- Superior Water Clarity
- Robust Build Quality
- Efficient Backwashing System
Who should skip it
- Higher Maintenance Involvement
- Increased Operating Expense
- Specialized Disposal Requirements
Key Specs
Material
Fiberglass reinforced polypropylene
Filter Type
Diatomaceous Earth (DE)
Filtration Area
48 sq ft
Connection Size
1 1/2 in.
Fittings
7 1/2 in. centerline bulkhead fittings
Testing
100% factory tested
Includes
1 1/2 in. bottom clean out port
Core Material
Polypropylene
Features
- Superior strength and reliability
- Convenient one-at-a-time grid servicing
- Efficient internal air relief
- Top-to-bottom backwash capability
- High Flow manual air relief valve
- Secure Tension Control clamp
- Easy access bottom clean out port
- Sleek black valves and plumbing
What customers say
The Pentair FNS Plus DE Filter is celebrated for delivering exceptional water clarity, setting a high standard for pool filtration. Its durable tank construction ensures reliability season after season. While the 48 sq ft model effectively handles debris and maintains strong flow for medium to large pools, its maintenance is more involved than simpler filters. Users acknowledge the DE powder handling and backwashing process require extra effort. Despite a substantial initial investment, those seeking superior water quality find the specialized upkeep worthwhile for this high-performing, long-lasting equipment. The value lies in its premium filtration results.
Still have a question?
Ask Hayley anything about this product before you decide.