Pentair FSH/FNS/Quad Nut (194997Z) premier this deck flange helps support

this deck flange helps support secure ladder installation and better long-term deck hardware performance

cleaning performance and movement can suffer

CMP generic Vac Lock cover

25677-100-970

Silicone generic lens gasket from J & J Electronics for SpaBrite-style applications

Pentair FSH/FNS/Quad Nut (194997Z) premier this deck flange helps supportFor a clean repair, start with the correct part. Pentair FSH FNS Quad Nut (194997Z) addresses a specific service point while preserving compatibility with the intended Pentair application. This replacement nut is used in FSH, FNS, and Quad filter assemblies where proper hardware tension keeps internal parts secured. It is useful when the existing component shows wear, damage, age related failure, or performance issues in the larger pool or spa system.