Pentair FNS Plus Filter Lid Assembly, 50/100 sq ft | 178553 Swim Jets Floating water-surface motion sensor for

Floating water-surface motion sensor for reliable detection

slim profile creates a clean visual line across the fireplace front

OEM adapters are molded for proper fit and sealing

10-5/8" Nicheless Design – A sleek

Need the correct Raypak replacement part while rebuilding the exchanger assembly

Pentair FNS Plus Filter Lid Assembly, 50/100 sq ft | 178553 Swim Jets Floating water-surface motion sensor forWhat This Part Is Used For Pentair 178553 Lid Assembly CNC, 50 100Sqft, FNS Plus is a replacement lid for compatible FNS Plus 50Sqft and 100Sqft filter models. It seals the cartridge filter housing during operation. Why This Part Matters Maintaining a proper seal prevents air intrusion and water leaks. A damaged lid can reduce filtration efficiency and system pressure. Replacing the assembly restores normal filter performance. Key Features and