Pentair FNS Plus 48 Sq. Ft. DE Filter | EC-180008

Pentair FNS Plus 48 DE Pool Filter | EC-180008

The Pentair FNS Plus EC-180008 DE Filter delivers exceptional water clarity by using diatomaceous earth (DE), the most effective pool filtration media available. With 48 sq. ft. of effective filtration area, this system is designed for residential pools and spas that demand superior water quality and reliable performance. The FNS Plus series features a reinforced fiberglass tank with chemical-resistant components, ensuring strength, durability, and long-term operation under tough pool conditions.

This DE filter is designed for efficiency and convenience. The EC-180008 uses a top-mounted, tool-free clamp ring for quick access to internal components, making service faster and easier. The curved vertical grid design increases surface area while maximizing hydraulic performance, providing excellent water circulation with minimal resistance. A built-in High Flow™ manual air relief valve simplifies system startup by releasing trapped air quickly, while a 2" plumbing connection supports strong water flow across different pool sizes.

Engineered to combine rugged construction, service-friendly features, and DE-level water clarity, the Pentair FNS Plus 48 is a proven solution for pool owners who want pristine, sparkling water and reliable performance season after season.

Key Features of the Pentair FNS Plus EC-180008 Filter

• 48 Sq. Ft. DE Filtration Area: Provides outstanding water clarity for residential pools and spas by filtering out the finest particles.

• Superior DE Media Filtration: Diatomaceous earth captures impurities smaller than what standard sand or cartridge systems can handle, leaving water visibly cleaner.

• Durable Fiberglass-Reinforced Tank: Built with chemical-resistant materials to ensure long-term strength and performance in harsh outdoor conditions.

• Curved Vertical Grid Design: Increases surface area and hydraulic efficiency, promoting smooth water flow and maximizing filtration effectiveness.

• Service-Friendly Clamp Ring: Easy-to-use clamp ring provides tool-free access to internal grids, simplifying routine maintenance and cleaning.

• High Flow™ Manual Air Relief Valve: Allows quick release of trapped air during startup, improving system efficiency and extending grid life.

• 2" Plumbing Connections: Large connections support improved hydraulic performance and make installation flexible across a range of pool systems.

• Proven Pentair Reliability: Part of the trusted FNS Plus series, known for long-lasting durability and superior water clarity in DE filtration.

Specifications

• Model Number: EC-180008
• Filtration Area: 48 square feet
• Maximum Filtration Size: Filters out particulate as small as 5 microns
• Dimensions: 21.5 inches in diameter and 49 inches in height
• Vertical Clearance: 74"
• Weight: Approximately 85 pounds
• Flow Rate: Maximum flow rate of 96 gallons per minute (GPM)
• DE Required: Uses about 4.8 pounds of diatomaceous earth (DE)
• Material: Chemical-resistant, fiberglass-reinforced polypropylene tank

Compatibility

• Pentair 1.5" Multiport Valve
• Pentair 2" Multiport Valve

 Includes

• (1) Pentair EC-180008 Quad DE 48 sq. ft. 
• (1) Complete Filter Grid Pack
• (1) Pressure Gauge
• (1) Manual Air Relief Valve
• (1) Drain and Waste Port