Pentair FNS Plus Tank Bottom Assembly 36 sq ft | FNS Plus DE Filter | 170016 Underwater Games ⚠️ IMPORTANT: Full Filter Service

⚠️ IMPORTANT: Full Filter Service Requires 3 Cartridges

It is NOT compatible with the Pentair Clean & Clear RP (CCRP) series or Sta-Rite Posi-Clear RP (PXCRP) series — those systems require a set of four smaller cartridges

yet lightweight aluminum frame with a no-mar finish to protect pool walls

Routine use of CV-600 will positively maintain water clarity

Off-Line CL220BR Compatibility is based on Hayward parts documentation and available OEM records

Pentair FNS Plus Tank Bottom Assembly 36 sq ft | FNS Plus DE Filter | 170016 Underwater Games ⚠️ IMPORTANT: Full Filter ServiceThe Pentair Tank Bottom Assembly (170016) is the OEM replacement lower tank body section for the FNS Plus D. E. Filter in the 36 square foot configuration. The tank bottom assembly forms the lower pressure vessel of the FNS Plus filter, housing the internal grid assembly and managing the flow of water through the D. E. filter media. When the tank bottom develops cracks, stress fractures, or compromised sealing surfaces common after years of seasonal