Product Overview

The Pentair FNS Plus Tank Bottom Assembly (Model 170018) is a genuine OEM replacement component for the FNS Plus 60 sq. ft. D.E. filter. This bottom tank shell forms the foundation of the filter body, supporting the internal grid assembly and ensuring proper sealing, structure, and long-term durability.

Made from heavy-duty, corrosion-resistant materials, this tank bottom withstands harsh pool environments, high pressure, and continuous filtration cycles. It is the perfect replacement when your original tank bottom is cracked, leaking, damaged, or worn from years of use.

Ideal For

• Repairs on Pentair FNS Plus 60 sq. ft. (Model 180009) filters

• Replacing cracked, leaking, or UV-damaged tank bottoms

• Restoring structural integrity to older D.E. filter units

• Pool professionals servicing residential or commercial filtration systems

Key Features

• OEM Pentair Replacement: Guaranteed fit and compatibility with the FNS Plus 60 sq. ft. filter.

• Heavy-Duty Tank Construction: Built from reinforced polymer designed to resist pressure, chemicals, and UV exposure.

• Precise Fit: Ensures proper sealing with the tank top assembly and correct alignment of internal components.

• Durable & Long-Lasting: Engineered to match factory performance and withstand demanding filtration cycles.

• Easy Installation: Designed for straightforward assembly with existing FNS Plus hardware and O-rings.

Benefits

• Restores Filter Performance: Eliminates leaks and structural issues caused by damaged tank bottoms.

• Extends Filter Lifespan: Replacing only the tank component avoids purchasing a full new filter.

• Safe & Reliable: Maintains proper pressure handling and system integrity.

• OEM Quality Assurance: Ensures compatibility, longevity, and dependable operation.

Customer Q&A

Q: Which FNS Plus model does this tank bottom fit?
A: This bottom assembly fits the FNS Plus 60 sq. ft. D.E. filter (Model 180009).

Q: Does it include the tank top or clamp?
A: No. This listing is for the tank bottom assembly only.

Q: Does it come with an O-ring?
A: The O-ring is typically sold separately unless noted by the supplier.

Q: Can this be used on older FNS filters?
A: It is designed specifically for the FNS Plus series and may not fit older FNS non-Plus models.

Q: Is installation complicated?
A: Most technicians can install it easily, but professional installation is recommended for pressure-rated components.

Specifications

• Part Number: 170018

• Compatible Filter: Pentair FNS Plus 60 sq. ft. (Model 180009)

• Component: Tank Bottom Assembly

• Material: Reinforced polymer, pressure-rated

• Includes: Bottom tank housing only

• Application: In-ground residential & commercial D.E. filtration systems

• Manufacturer: Pentair