Product Overview

The Pentair FNS Plus Tank Bottom Assembly is a genuine replacement base for 48 sq ft FNS Plus cartridge pool filters. This tank bottom serves as the foundation of the filter housing, providing secure support for internal elements and helping maintain proper pressure and flow. When the original tank bottom becomes cracked, warped, or compromised, replacing it with this OEM part restores structural integrity and reliable filtration performance.

Ideal For

• Pentair FNS Plus cartridge pool filters (48 sq ft models)

• Replacing damaged, leaking, or deteriorated tank bottoms

• Restoring filter housing integrity and performance

• Pool maintenance and filtration system repairs

Key Features

• Genuine OEM tank bottom assembly for FNS Plus filters

• Designed specifically for 48 sq ft tank models

• Provides a secure, leak-resistant foundation for filter internals

• Durable construction for long-lasting performance

• Compatible with original FNS Plus components

Benefits

• Restores proper filter housing support and alignment

• Helps prevent leaks and pressure loss

• Extends the life of your existing filtration system

• Eliminates the need for full filter replacement

• Simplifies maintenance and part replacement

Specifications

• Brand: Pentair

• Series: FNS Plus

• Tank Size Compatibility: 48 sq ft

• Part Type: Tank Bottom Assembly

• Application: Cartridge pool filter replacement part

• Part Number: 170017

Customer-Facing Q&A

Q: Does this include any internal filter elements?
A: No. This assembly includes the tank bottom only. Internal cartridges and other filter components are sold separately.

Q: Is this compatible with other FNS Plus tank sizes?
A: This tank bottom assembly is specifically designed for 48 sq ft FNS Plus filters. Be sure to confirm your filter model before ordering.

Q: Is this a genuine Pentair part?
A: Yes. This is an OEM Pentair replacement part, part number 170017.

Q: Can I install this myself?
A: Yes. Replacing the tank bottom is generally straightforward, but proper filter shut-down and safety precautions are recommended.