{"product_id":"pentairfnsplustanklidassembly36sf170020pen170020","title":"Pentair FNS Plus Tank Lid Assembly 36 sf | 170020","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp data-start=\"58\" data-end=\"370\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"58\" data-end=\"78\"\u003eProduct Overview\u003c\/strong\u003e\u003cbr data-start=\"78\" data-end=\"81\"\u003eThe Pentair 170020 FNS Plus Tank Lid Assembly is a genuine OEM replacement upper tank section for the Pentair FNS Plus 36 sq ft D.E. filter. This lid assembly forms the top half of the filter tank and provides the upper sealing surface needed for proper clamp band and tank O-ring fitment.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"372\" data-end=\"618\"\u003eThis replacement part is commonly used when the original tank lid is cracked, leaking, damaged, or no longer sealing correctly. It is designed to restore the structural integrity of the filter housing without replacing the complete filter system.\u003c\/p\u003e\n\u003cp data-start=\"620\" data-end=\"734\"\u003e\u003cstrong data-start=\"620\" data-end=\"633\"\u003eIdeal For\u003c\/strong\u003e\u003cbr data-start=\"633\" data-end=\"636\"\u003eReplacing the upper tank lid assembly on a Pentair FNS Plus 36 sq ft D.E. filter model \u003cstrong data-start=\"723\" data-end=\"733\"\u003eFNSP36\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"736\" data-end=\"754\"\u003e\u003cstrong data-start=\"736\" data-end=\"752\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"755\" data-end=\"1231\"\u003e\n\u003cli data-section-id=\"bdurqg\" data-start=\"755\" data-end=\"795\"\u003eGenuine Pentair OEM replacement part\u003c\/li\u003e\n\u003cli data-section-id=\"15f19lf\" data-start=\"796\" data-end=\"851\"\u003eDesigned for Pentair FNS Plus 36 sq ft D.E. filters\u003c\/li\u003e\n\u003cli data-section-id=\"1i2nu7g\" data-start=\"852\" data-end=\"894\"\u003eReplaces the upper tank \/ lid assembly\u003c\/li\u003e\n\u003cli data-section-id=\"rerseb\" data-start=\"895\" data-end=\"939\"\u003eHelps restore proper filter tank sealing\u003c\/li\u003e\n\u003cli data-section-id=\"zrr7vy\" data-start=\"940\" data-end=\"1013\"\u003eProvides the upper sealing surface for the tank O-ring and clamp band\u003c\/li\u003e\n\u003cli data-section-id=\"6q6g5j\" data-start=\"1014\" data-end=\"1050\"\u003eDurable molded tank construction\u003c\/li\u003e\n\u003cli data-section-id=\"1kn21a\" data-start=\"1051\" data-end=\"1104\"\u003eUsed for cracked, leaking, or damaged filter lids\u003c\/li\u003e\n\u003cli data-section-id=\"ijcj0v\" data-start=\"1105\" data-end=\"1162\"\u003eCompatible with FNS Plus 36 sq ft D.E. filter systems\u003c\/li\u003e\n\u003cli data-section-id=\"wzh5xb\" data-start=\"1163\" data-end=\"1231\"\u003eHelps avoid full filter replacement when only the lid is damaged\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1233\" data-end=\"1576\"\u003e\u003cstrong data-start=\"1233\" data-end=\"1245\"\u003eBenefits\u003c\/strong\u003e\u003cbr data-start=\"1245\" data-end=\"1248\"\u003eThe Pentair 170020 tank lid assembly helps restore safe and proper operation of the FNS Plus filter housing. A damaged lid can cause leaks, pressure loss, clamp sealing issues, or unsafe filter operation. Replacing the upper tank section with the correct OEM Pentair part helps maintain factory fitment and reliable performance.\u003c\/p\u003e\n\u003cp data-start=\"1578\" data-end=\"1715\"\u003eThis is a practical repair option when the lower tank, clamp band, grid assembly, and other internal parts are still in usable condition.\u003c\/p\u003e\n\u003cp data-start=\"1717\" data-end=\"1837\"\u003e\u003cstrong data-start=\"1717\" data-end=\"1734\"\u003eCompatibility\u003c\/strong\u003e\u003cbr data-start=\"1734\" data-end=\"1737\"\u003eDesigned for the \u003cstrong data-start=\"1754\" data-end=\"1795\"\u003ePentair FNS Plus 36 sq ft D.E. filter\u003c\/strong\u003e, commonly identified as model \u003cstrong data-start=\"1826\" data-end=\"1836\"\u003eFNSP36\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1839\" data-end=\"2084\"\u003eAlways confirm your filter model number, tank size, clamp style, air relief assembly, and parts diagram before ordering. Older FNS Plus filters may require inspection of the clamp band, O-ring, and related hardware before replacing the tank lid.\u003c\/p\u003e\n\u003cp data-start=\"2086\" data-end=\"2104\"\u003e\u003cstrong data-start=\"2086\" data-end=\"2104\"\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"2106\" data-end=\"2677\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"2106\" data-end=\"2133\"\u003e\n\u003ctr data-start=\"2106\" data-end=\"2133\"\u003e\n\u003cth data-start=\"2106\" data-end=\"2122\" data-col-size=\"sm\" class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"2122\" data-end=\"2133\" data-col-size=\"sm\" class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"2144\" data-end=\"2677\"\u003e\n\u003ctr data-start=\"2144\" data-end=\"2163\"\u003e\n\u003ctd data-start=\"2144\" data-end=\"2152\" data-col-size=\"sm\"\u003eBrand\u003c\/td\u003e\n\u003ctd data-start=\"2152\" data-end=\"2163\" data-col-size=\"sm\"\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2164\" data-end=\"2212\"\u003e\n\u003ctd data-start=\"2164\" data-end=\"2179\" data-col-size=\"sm\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd data-start=\"2179\" data-end=\"2212\" data-col-size=\"sm\"\u003eD.E. Filter Tank Lid Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2213\" data-end=\"2250\"\u003e\n\u003ctd data-start=\"2213\" data-end=\"2240\" data-col-size=\"sm\"\u003eManufacturer Part Number\u003c\/td\u003e\n\u003ctd data-start=\"2240\" data-end=\"2250\" data-col-size=\"sm\"\u003e170020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2251\" data-end=\"2267\"\u003e\n\u003ctd data-start=\"2251\" data-end=\"2257\" data-col-size=\"sm\"\u003eSKU\u003c\/td\u003e\n\u003ctd data-start=\"2257\" data-end=\"2267\" data-col-size=\"sm\"\u003e170020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2268\" data-end=\"2313\"\u003e\n\u003ctd data-start=\"2268\" data-end=\"2284\" data-col-size=\"sm\"\u003eBarcode \/ UPC\u003c\/td\u003e\n\u003ctd data-start=\"2284\" data-end=\"2313\" data-col-size=\"sm\"\u003eConfirm before publishing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2314\" data-end=\"2342\"\u003e\n\u003ctd data-start=\"2314\" data-end=\"2330\" data-col-size=\"sm\"\u003eFilter Series\u003c\/td\u003e\n\u003ctd data-start=\"2330\" data-end=\"2342\" data-col-size=\"sm\"\u003eFNS Plus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2343\" data-end=\"2369\"\u003e\n\u003ctd data-start=\"2343\" data-end=\"2357\" data-col-size=\"sm\"\u003eFilter Size\u003c\/td\u003e\n\u003ctd data-start=\"2357\" data-end=\"2369\" data-col-size=\"sm\"\u003e36 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2370\" data-end=\"2406\"\u003e\n\u003ctd data-start=\"2370\" data-end=\"2396\" data-col-size=\"sm\"\u003eCompatible Filter Model\u003c\/td\u003e\n\u003ctd data-start=\"2396\" data-end=\"2406\" data-col-size=\"sm\"\u003eFNSP36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2407\" data-end=\"2436\"\u003e\n\u003ctd data-start=\"2407\" data-end=\"2421\" data-col-size=\"sm\"\u003eFilter Type\u003c\/td\u003e\n\u003ctd data-start=\"2421\" data-end=\"2436\" data-col-size=\"sm\"\u003eD.E. Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2437\" data-end=\"2481\"\u003e\n\u003ctd data-start=\"2437\" data-end=\"2452\" data-col-size=\"sm\"\u003eTank Section\u003c\/td\u003e\n\u003ctd data-start=\"2452\" data-end=\"2481\" data-col-size=\"sm\"\u003eLid \/ Upper Tank Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2482\" data-end=\"2506\"\u003e\n\u003ctd data-start=\"2482\" data-end=\"2490\" data-col-size=\"sm\"\u003eColor\u003c\/td\u003e\n\u003ctd data-start=\"2490\" data-end=\"2506\" data-col-size=\"sm\"\u003eTan \/ Almond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2507\" data-end=\"2556\"\u003e\n\u003ctd data-start=\"2507\" data-end=\"2521\" data-col-size=\"sm\"\u003eApplication\u003c\/td\u003e\n\u003ctd data-start=\"2521\" data-end=\"2556\" data-col-size=\"sm\"\u003ePool and spa D.E. filter repair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2557\" data-end=\"2589\"\u003e\n\u003ctd data-start=\"2557\" data-end=\"2568\" data-col-size=\"sm\"\u003eIncludes\u003c\/td\u003e\n\u003ctd data-start=\"2568\" data-end=\"2589\" data-col-size=\"sm\"\u003eTank lid assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2590\" data-end=\"2633\"\u003e\n\u003ctd data-start=\"2590\" data-end=\"2610\" data-col-size=\"sm\"\u003eOEM \/ Aftermarket\u003c\/td\u003e\n\u003ctd data-start=\"2610\" data-end=\"2633\" data-col-size=\"sm\"\u003eGenuine OEM Pentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2634\" data-end=\"2677\"\u003e\n\u003ctd data-start=\"2634\" data-end=\"2662\" data-col-size=\"sm\"\u003eProfessional Installation\u003c\/td\u003e\n\u003ctd data-start=\"2662\" data-end=\"2677\" data-col-size=\"sm\"\u003eRecommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"2679\" data-end=\"2954\"\u003e\u003cstrong data-start=\"2679\" data-end=\"2710\"\u003eImportant Installation Note\u003c\/strong\u003e\u003cbr data-start=\"2710\" data-end=\"2713\"\u003eBefore servicing or replacing the tank lid, fully turn off the pool system, open the air relief valve, and make sure all filter pressure has been released. D.E. filters operate under pressure and can be dangerous if opened while pressurized.\u003c\/p\u003e\n\u003cp data-start=\"2956\" data-end=\"3161\"\u003eDuring replacement, inspect the tank O-ring, clamp band, air relief assembly, pressure gauge, internal manifold, grids, and lower tank sealing surface. Replace worn or damaged seals and hardware as needed.\u003c\/p\u003e\n\u003cp data-start=\"3163\" data-end=\"3186\"\u003e\u003cstrong data-start=\"3163\" data-end=\"3186\"\u003eCustomer-Facing Q\u0026amp;A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3188\" data-end=\"3323\"\u003e\u003cstrong data-start=\"3188\" data-end=\"3232\"\u003eQ: What is Pentair part 170020 used for?\u003c\/strong\u003e\u003cbr data-start=\"3232\" data-end=\"3235\"\u003eA: It replaces the upper tank lid assembly on the Pentair FNS Plus 36 sq ft D.E. filter.\u003c\/p\u003e\n\u003cp data-start=\"3325\" data-end=\"3447\"\u003e\u003cstrong data-start=\"3325\" data-end=\"3359\"\u003eQ: Which filter does this fit?\u003c\/strong\u003e\u003cbr data-start=\"3359\" data-end=\"3362\"\u003eA: This part is designed for the Pentair FNS Plus 36 sq ft D.E. filter, model FNSP36.\u003c\/p\u003e\n\u003cp data-start=\"3449\" data-end=\"3671\"\u003e\u003cstrong data-start=\"3449\" data-end=\"3484\"\u003eQ: Is this the complete filter?\u003c\/strong\u003e\u003cbr data-start=\"3484\" data-end=\"3487\"\u003eA: No. This is the tank lid \/ upper tank assembly only. It does not include the full filter, lower tank, complete grid set, clamp band, or plumbing connections unless otherwise stated.\u003c\/p\u003e\n\u003cp data-start=\"3673\" data-end=\"3827\"\u003e\u003cstrong data-start=\"3673\" data-end=\"3715\"\u003eQ: Will this fix a cracked filter lid?\u003c\/strong\u003e\u003cbr data-start=\"3715\" data-end=\"3718\"\u003eA: Yes, if the damage is limited to the upper tank lid and the rest of the filter is still in good condition.\u003c\/p\u003e\n\u003cp data-start=\"3829\" data-end=\"4009\"\u003e\u003cstrong data-start=\"3829\" data-end=\"3886\"\u003eQ: Should I replace the tank O-ring at the same time?\u003c\/strong\u003e\u003cbr data-start=\"3886\" data-end=\"3889\"\u003eA: It is recommended to inspect the tank O-ring and replace it if it is worn, flattened, stretched, cracked, or leaking.\u003c\/p\u003e\n\u003cp data-start=\"4011\" data-end=\"4249\"\u003e\u003cstrong data-start=\"4011\" data-end=\"4075\"\u003eQ: Does this include the air relief valve or pressure gauge?\u003c\/strong\u003e\u003cbr data-start=\"4075\" data-end=\"4078\"\u003eA: This listing is for the tank lid assembly. Confirm current packaging before publishing if your inventory includes or excludes the air relief assembly or pressure gauge.\u003c\/p\u003e\n\u003cp data-start=\"4251\" data-end=\"4409\"\u003e\u003cstrong data-start=\"4251\" data-end=\"4299\"\u003eQ: Is professional installation recommended?\u003c\/strong\u003e\u003cbr data-start=\"4299\" data-end=\"4302\"\u003eA: Yes. Because this is part of a pressurized D.E. filter system, professional installation is recommended.\u003c\/p\u003e\n\u003cp data-start=\"4411\" data-end=\"4489\"\u003e \u003c\/p\u003e\n\u003c!--split--\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52762832077110,"sku":"PEN170020 -H","price":239.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/image_8883db16-ae53-49ba-aaa7-c6c8e0474f4e.jpg?v=1782970223","url":"https:\/\/poolsupplydepot.net\/products\/pentairfnsplustanklidassembly36sf170020pen170020","provider":"Pool Supply Depot","version":"1.0","type":"link"}