Pentair FNS Plus Filter Lid Assembly, 48 sq ft | 170021 Smart Company Worn tracks reduce grip and

Worn tracks reduce grip and climbing ability

and ensure long-term fireplace reliability

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This brand’s catalog emphasizes serviceability

Pentair FNS Plus Filter Lid Assembly, 48 sq ft | 170021 Smart Company Worn tracks reduce grip andWhat 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