Pentair FNS Plus Filter 36 sq ft | EC-180007

Pentair FNS Plus Filter 36 sq ft | EC-180007

High-performance fiberglass-reinforced D.E. filter by Pentair (SKU EC-180007) with 36 sq ft grid pack and ~72 GPM flow rating.

Features

• 36 sq ft effective filtration area with approx. 72 GPM flow capability.
• Fiberglass-reinforced polypropylene tank for superior chemical and corrosion resistance.
• Curved vertical grid (Service-Ease™) design maximises filter area and extends run intervals.
• Top-to-bottom backwash design plus 2″ plumbing connections for high flow and easy servicing.
• Continuous High-Flow™ internal air relief and manual air relief valve maintain efficient operation.
• Certified to NSF/ANSI 50; maximum continuous operating pressure 50 psi; water temperature limit 104 °F.

Description

The Pentair FNS Plus Filter 36 sq ft (SKU EC-180007) is built for residential in-ground pools where clarity, efficiency, and durability matter. With a 36 sq ft grid pack rated for ~72 GPM, the filter supports strong turnover while maintaining efficient performance. The durable fibreglass-reinforced tank handles chemical exposure and weather conditions with ease. Inside, the curved vertical grid design increases surface area and reduces the frequency of cleanings. Advanced features like the integrated air-relief system and full-drain plumbing further streamline maintenance. If you're looking for a high-quality D.E. filter upgrade, this model delivers reliable filtration and low-maintenance operation.

Pro Tip

Ensure your pump flow remains at or below ~72 GPM to maintain optimal media life and clarity. Verify you have at least 62″ of vertical clearance above the filter for grid service. When system pressure rises ~10 psi above the initial reading, backwash and inspect the grid pack.

Related Parts

• Pentair FNS Plus Filter 48 sq ft | EC-180008
• Pentair FNS Plus Filter 60 sq ft | EC-180009
• Pentair High Flow Manual Air Relief Valve | 98209800
• Pentair Manifold Top with Air Bleed | 59023700
• Pentair Internal Air Bleed Assembly for FNS Plus D.E. Filters | 190092
• Pentair Grid Assembly Lrg 36 Sq Ft Covered | 59001800Z
• Pentair Grid Assembly small Part 36 Sq Ft Covered | 59001700
• Pentair Complete Element Assembly 36 Sq Ft VGF RPM | 59023500
• Pentair Clean and Clear Plus and FNS Tank O-Ring | 39010200Z
• Pentair Tension Control Clamp For FNS Plus & Clean & Clear Plus Filter Tanks | 190003
• Pentair Standpipe Assembly for 36 Sq Ft FNS Plus Filters | 190035
• Pentair Tank Bottom Assembly for FNS Plus 36 Sq Ft DE Filter | 170016
• Pentair Tank Lid Assembly for FNS Plus 36 Sq Ft DE Filter | 170020
• Pentair FNS Plus 36 Grid Replacement Pack | 198081
• Pentair 19" Stainless Steel Backup Ring for DE & Cartridge Filters | 195339
• Pentair Inlet Pipe Assembly with Bulkhead for FNS Plus D.E. Filters | 190043

Installation Tips

High-level safety/compatibility notes only: Shut off pump power and relieve system pressure before servicing or installing. Ensure the filter base is level and rated for the weight of the tank, water, and D.E. grid pack. Confirm plumbing size and valve port match the filter’s 2″ connection. After installation, clamp the tank securely, check the O-ring seal, and verify air relief functionality before returning to service.

We want you to have quick and easy access to warranty information for all the brands we carry. Please click on the links below to view each manufacturer’s warranty page:

• Pentair Warranty
  
• A&A (Pentair In-Floor) Warranty
  
• Fluidra Warranty (Zodiac / Jandy / Polaris / Caretaker)
  
• Paramount Warranty
  
• BlueSquare Warranty
  
• Hayward Warranty
  
• All Other Manufacturer Warranties
  

Note: Warranty coverage, registration, and service terms are provided directly by the manufacturer. Please review the details carefully to ensure proper understanding of coverage and claim procedures.