Pentair | 170016 | FNS Plus 36 sf Tank Bottom Assembly | D.E. Filter
The Pentair 170016 tank bottom assembly is a replacement lower tank section designed for FNS Plus 36 square foot pool and spa D.E. filter systems. This component forms the structural base of the filter housing and supports internal filtration components such as the standpipe and grid assembly. Its durable molded construction provides the pressure-rated foundation required for reliable filtration performance.
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Key Features
⢠Replacement tank bottom assembly designed for Pentair FNS Plus 36 square foot D.E. filter systems.
⢠Forms the lower half of the filter tank and supports internal filtration components.
⢠Provides the sealing surface for the tank O-ring and clamp band connection.
⢠Durable molded construction withstands filtration pressure, pool chemicals, and outdoor conditions.
⢠Includes standpipe to simplify installation and restore internal plumbing configuration.
⢠Direct replacement for FNS Plus 36 sq ft D.E. filter model FNSP36.
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Product Overview
The Pentair 170016 tank bottom assembly serves as the lower housing section of the FNS Plus 36 square foot D.E. filter system. This component provides the base structure for the filter tank while supporting the internal standpipe and filtration grid assembly that capture debris and contaminants from circulating pool water.
Constructed from durable molded material, the tank bottom is designed to withstand the pressure and environmental conditions typical in pool filtration systems. The assembly also provides the seating surface for the tank O-ring and clamp band, which seal the upper and lower tank sections together. Replacing a damaged tank bottom restores structural integrity and helps maintain safe and efficient operation of the Pentair FNS Plus 36 sq ft D.E. filter system.

Description
The Pentair 170016 tank bottom assembly is a replacement lower tank section designed for FNS Plus 36 square foot pool and spa D.E. filter systems. This component forms the structural base of the filter housing and supports internal filtration components such as the standpipe and grid assembly. Its durable molded construction provides the pressure-rated foundation required for reliable filtration performance.
āāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāā
Key Features
⢠Replacement tank bottom assembly designed for Pentair FNS Plus 36 square foot D.E. filter systems.
⢠Forms the lower half of the filter tank and supports internal filtration components.
⢠Provides the sealing surface for the tank O-ring and clamp band connection.
⢠Durable molded construction withstands filtration pressure, pool chemicals, and outdoor conditions.
⢠Includes standpipe to simplify installation and restore internal plumbing configuration.
⢠Direct replacement for FNS Plus 36 sq ft D.E. filter model FNSP36.
āāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāāā
Product Overview
The Pentair 170016 tank bottom assembly serves as the lower housing section of the FNS Plus 36 square foot D.E. filter system. This component provides the base structure for the filter tank while supporting the internal standpipe and filtration grid assembly that capture debris and contaminants from circulating pool water.
Constructed from durable molded material, the tank bottom is designed to withstand the pressure and environmental conditions typical in pool filtration systems. The assembly also provides the seating surface for the tank O-ring and clamp band, which seal the upper and lower tank sections together. Replacing a damaged tank bottom restores structural integrity and helps maintain safe and efficient operation of the Pentair FNS Plus 36 sq ft D.E. filter system.

















