Pentair FNS Plus Filters 60 || EC-180009

Pentair FNS Plus Filter 60 sq ft | EC-180009

High-performance D.E. (diatomaceous earth) pool filter by Pentair (SKU EC-180009) with 60 sq ft grid area, rated for up to ~120 GPM flow and built for clarity and durability.

Features

• 60 sq ft effective grid filtration area for substantial debris capacity and extended service intervals.
• Flow rating up to ~120 GPM under guideline sizing.
• Fiberglass-reinforced polypropylene tank resists corrosion, pool chemicals and UV exposure.
• Curved vertical grid-pack (Service-Ease™) and streamlined manifold for improved flow and prolonged filter performance. 
• Top-to-bottom backwash design paired with integrated High Flow™ internal air relief and manual air-relief valve for easy maintenance.

Description

The Pentair FNS Plus Filter 60 sq ft (SKU EC-180009) is designed to meet the performance demands of in-ground residential pools seeking exceptional clarity and longer service intervals. With 60 square feet of filtration surface area and a flow capability around 120 GPM (when properly sized), this D.E. filter supports higher volume and turnover systems while maintaining efficient operation. The durable fiberglass-reinforced polypropylene tank ensures long life under harsh pool conditions. Internally, the curved grids maximise surface area and reduce hydraulic resistance, extending time between cleanings and reducing pump strain. Service-friendly design features—such as the top-to-bottom backwash layout, accessible drain port and air relief system—make upkeep faster and safer. If you want a premium filtration solution without over-sizing, this model delivers impressive clarity with built-in convenience.

Pro Tip

To get the most from this filter, match your pump and plumbing so that the system flow remains at or below ~120 GPM. Make sure you allow for roughly 86″ of vertical clearance above the unit for the grid removal and service access. When your pressure gauge climbs approximately 10 psi over your starting baseline, it’s time to backwash and inspect the grids for wear.

Installation Tips

High-level safety/compatibility notes only: Shut off pool pump power and relieve all system pressure before servicing or installing. Ensure the filter sits on a level concrete pad designed to carry the tank + water + grid weight. Confirm plumbing connections match the filter’s 2-inch port size and purchase the multiport or backwash valve separately (valve sold separately). Lubricate the O-ring on the lid or clamp, secure the tank clamp per manufacturer specification, and check that the air-relief valve is functioning before returning system to service.