• Pentair 170018 FNS Plus Tank Bottom
  • Pentair 170018
  • 170018 FNS Plus Tank Bottom
  • FNS Plus Tank Bottom
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Pentair

Pentair 170018 FNS Plus Tank Bottom | 60 sf

Pentair 170018 FNS Plus Tank Bottom | 60 sf

$465.99 USD
$465.99 USD
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Shipping calculated at checkout.

Replace your worn, cracked, or leaking FNS Plus Tank Bottom with the Pentair 170018 FNS Plus Tank Bottom. It provides an OEM replacement that refurbishes the structural integrity of your FNS Plus filter to normal operation. Specifically, Pentair manufactured it with the original filter specifications, providing a tight seal, lasting durability, and perfect seating.

What does the Pentair 170018 FNS Plus Tank Bottom Do?

The Pentair 170018 is only compatible with 180009 FNS Plus D.E. filters. Also, it provides the filter grids, plumbing, and internal components with a seated connection with the filter. It is important to use an OEM replacement part because they offer the perfect fit, correct pressurization, and a long lasting component.

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Lowest Authorized Dealer Price Shasta Pool Supply

Key Features

  • Genuine Pentair OEM replacement part
  • Designed specifically for Pentair FNS Plus 60 sq ft D.E. filters
  • Heavy-duty construction for long-term durability
  • Restores proper sealing and structural integrity
  • Allows repair without replacing the full filter system
  • Compatible with existing internal grids and hardware

Technical Specifications

  • Filter Type: D.E. (Diatomaceous Earth)
  • Filter Size Compatibility: 60 sq ft
  • Application: Replacement tank bottom (lower half)
  • Compatibility: Pentair 180009 FNS Plus 60 SQ FT filters only

Specs

Best For: Pool Owners Repairing an FNS Plus 60 sq ft Filter

This tank bottom is best for pool owners or service professionals dealing with a cracked or leaking Pentair FNS Plus 60 SQ FT filter base. It’s ideal when the upper tank, grids, and internals are still in good condition, allowing you to extend the life of your existing filter. This is a cost-effective repair that maintains OEM performance and safety ratings.

  • Best for: Structural tank damage, leaks at the base, aging filter housings
  • Not ideal for: Filters with damaged internals or non–FNS Plus models

Expert Comparison & Pro Tips

Compared to aftermarket tank halves, the Pentair 170018 offers precise molding, correct pressure tolerances, and guaranteed compatibility with FNS Plus internals. Aftermarket options often save little upfront but risk poor sealing or premature failure.

Pro Tip: Always inspect the tank O-ring and replace it during installation to prevent leaks and ensure a proper seal when reassembling the filter.

Our Expert Verdict: Reliable OEM Repair That Makes Sense

The Pentair 170018 FNS Plus Tank Bottom is the right solution when your 60 sq ft FNS Plus filter needs structural repair but not full replacement. It restores safe operation, maintains filtration efficiency, and protects your investment in Pentair equipment. For pool owners who want a dependable, long-term fix, this OEM replacement delivers peace of mind. Order from ShastaPoolSupply.com for expert-backed support, fast shipping, and competitive pricing from a trusted pool industry leader.
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How does the Pentair 170018 tank bottom compare to replacing the entire filter?

Replacing just the tank bottom is significantly more cost-effective than installing a whole new D.E. filter when the internals are still functional. The Pentair 170018 maintains original performance and pressure ratings while avoiding unnecessary replacement costs. It’s the professional repair approach most pool technicians recommend when damage is limited to the lower tank housing.

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What our customers are saying

Chuck and Bryan are both very helpful and kind / professional. Definitely recommend to others!

Chad W

Great product selection. Competitive pricing. Quality repair parts.

Brent G

Reps exceeded my expectation to help get the right repair kit. Install went in withan issue, thx

Mike H

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