{"product_id":"pentairfnsplustanklidassembly48sf170021pen170021","title":"Pentair FNS Plus Tank Lid Assembly 48 sf | 170021","description":"\u003cdiv\u003e\n\u003ch1\u003ePentair 170021 Tank Lid Assembly – for FNS Plus 48 sq ft D.E. Filter\u003c\/h1\u003e\n\u003cp\u003eThis Pentair 170021 is a replacement tank lid assembly designed for use with the FNS Plus 48 sq ft vertical D.E. filter system. It restores the sealing interface and structural integrity of the filter tank assembly.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement lid designed for the 48 sq ft filter tank size.\u003c\/li\u003e\n\u003cli\u003eDurable construction to maintain proper filtration pressure and seal performance.\u003c\/li\u003e\n\u003cli\u003eOEM part fit ensures compatibility and avoids having to replace the entire filter tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 170021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Lid for vertical D.E. filter tank, 48 sq ft size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse Case:\u003c\/strong\u003e Replacement when the original lid is cracked, warped or fails to seal properly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eShut off the pool pump and relieve pressure in the filter tank. Remove the old lid assembly and inspect tank rim and seal surfaces for damage. Install the new 170021 lid, ensure the O-ring or gasket is properly seated, and clamp or bolt the lid according to manufacturer specification. After installation, restore flow and monitor for correct pressure behavior and absence of bypass or leaks.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the lid annually for signs of cracking, warping or damage around the rim.\u003c\/li\u003e\n\u003cli\u003eIf the filter pressure drops off or the lid hangs open\/moves under pressure, a replacement lid is often the solution.\u003c\/li\u003e\n\u003cli\u003eStock this lid as part of your service inventory to quickly address common filter tank issues without replacing the entire unit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose This Lid Assembly?\u003c\/h2\u003e\n\u003cp\u003eFor pool service professionals and retail storefronts, stocking the Pentair 170021 lid assembly provides a cost-effective way to restore filter system integrity. It enables longer equipment life and avoids full tank replacement while delivering correct fit and performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":46797809844399,"sku":"170021","price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/pentair-fns-plus-tank-lid-assembly-48-sf-170021-pool-filter-parts-3289510.jpg?v=1777067614","url":"https:\/\/freshized.com\/products\/pentairfnsplustanklidassembly48sf170021pen170021","provider":"Freshized","version":"1.0","type":"link"}