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while the four-pack format makes it easier to refresh the full cartridge set together
making it central to overall heater performance
Helps cover compatible skimmer openings
The TC440-MB fit gives this assembly practical value because standpipe components work best when they match the original internal layout closely
Use part 354531Z when the existing component is worn
Pentair FNS 2-3/8" Bulkhead [After 11/98] (194801Z) darlly while the four-pack format makesRoutine maintenance often comes down to renewing the part that handles movement, sealing, support, or flow control. Pentair FNS 2 3 8" Bulkhead [After 11 98] (194801Z) is built for that practical service need. This post 11 98 FNS bulkhead supports plumbing connection points on compatible FNS filter systems, helping maintain a sealed passage through the tank wall. It is useful when the existing component shows wear, damage, age related failure, or