Pentair FNS Plus Filter Lid Assembly, 48 sq ft | 170021 Waterway Durable Black Finish: Weather-resistant construction

Durable Black Finish: Weather-resistant construction ensures longevity in any outdoor setting

modern touch while providing a heat-resistant media bed

Install it in areas where motion needs to be transferred efficiently

PGS A30 series grill heads

Shut off power before servicing salt system components

Pentair FNS Plus Filter Lid Assembly, 48 sq ft | 170021 Waterway Durable Black Finish: Weather-resistant constructionWhat This Part Is Used For Pentair 170021 Lid Assembly 48Sqft, FNS Plus is a replacement lid for compatible FNS Plus 48Sqft filters. It covers and seals the filter tank. Why This Part Matters Maintaining a proper seal prevents pressure loss and water leaks. A damaged lid can disrupt filtration efficiency. Replacing it helps restore consistent filter performance. Key Features and Specifications Pentair manufacturer part number 170021 For FNS Plus