The Pentair 170018 tank bottom assembly is a replacement lower housing component designed for the FNS Plus 60 square foot pool and spa D.E. filter system. This assembly forms the base of the filter tank and supports internal components such as the standpipe and grid assembly. Its molded construction provides the structural foundation required for proper filtration pressure and long-term system operation.

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Key Features

• Replacement tank bottom assembly designed specifically for Pentair FNS Plus 60 square foot D.E. filter systems.
• Forms the lower half of the filter tank and supports internal filtration grids and standpipe components.
• Provides the base structure required to maintain safe filtration pressure and tank alignment.
• Includes integrated standpipe and bulkhead fittings used to route filtered water through the filter system.
• Durable molded construction designed to withstand pool chemicals, filtration pressure, and outdoor conditions.
• Direct OEM replacement component for Pentair FNSP60 60 sq ft D.E. filter systems.

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Product Overview

The Pentair 170018 tank bottom assembly serves as the structural base of the FNS Plus 60 square foot D.E. filter system. Installed as the lower section of the filter housing, the assembly supports the internal grid assembly and standpipe that direct filtered water back into the pool circulation plumbing.

The tank bottom is built from durable molded material designed to withstand the pressure and environmental conditions common in pool filtration systems. It also forms the sealing surface for the tank O-ring and clamp band that secure the upper and lower tank halves together. Replacing a damaged or cracked tank base restores the filter’s structural integrity and ensures reliable filtration performance for the Pentair FNS Plus 60 sq ft D.E. filter.