{"product_id":"filbur-apcfgr52-18-x-17-3-4-rect-starite-de-grid-239000142","title":"Filbur APCFGR52 FC-9890 DE Filter Grid, 18 x 17-3\/4 inch, Sta-Rite Swimquip DES60 Offset Port","description":"\n\u003cstyle\u003e\n  .gr52grid-wrap, .gr52grid-wrap * { box-sizing: border-box; }\n  .gr52grid-wrap {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #1a1a1a;\n    line-height: 1.55;\n  }\n\n  \/* Header *\/\n  .gr52grid-header {\n    border-left: 5px solid #8bc34a;\n    padding: 4px 0 4px 16px;\n    margin-bottom: 20px;\n  }\n  .gr52grid-header h2 {\n    margin: 0;\n    color: #1a4d2e;\n    font-size: 1.55em;\n    font-weight: 700;\n    letter-spacing: -0.01em;\n  }\n  .gr52grid-subtitle {\n    margin: 4px 0 0;\n    color: #666;\n    font-size: 0.95em;\n  }\n\n  \/* Intro *\/\n  .gr52grid-intro {\n    margin: 0 0 24px;\n    color: #333;\n    font-size: 0.98em;\n  }\n\n  \/* Section heading *\/\n  .gr52grid-section { margin-bottom: 28px; }\n  .gr52grid-section-heading {\n    background: #1a4d2e;\n    color: #fff;\n    font-size: 0.85em;\n    font-weight: 700;\n    letter-spacing: 0.08em;\n    text-transform: uppercase;\n    padding: 6px 12px;\n    margin: 0 0 0;\n    border-radius: 4px 4px 0 0;\n  }\n\n  \/* Spec table *\/\n  .gr52grid-spec-table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.93em;\n    background: #fff;\n    border: 1px solid #d8dde6;\n    border-top: none;\n    border-radius: 0 0 4px 4px;\n    overflow: hidden;\n  }\n  .gr52grid-spec-table tr { border-bottom: 1px solid #eef1f6; }\n  .gr52grid-spec-table tr:nth-child(even) { background: #fafbfd; }\n  .gr52grid-spec-table tr:last-child { border-bottom: none; }\n  .gr52grid-spec-table th,\n  .gr52grid-spec-table td {\n    text-align: left;\n    padding: 8px 14px;\n    vertical-align: top;\n  }\n  .gr52grid-spec-table th {\n    font-weight: 600;\n    color: #4a4a4a;\n    width: 38%;\n  }\n  .gr52grid-spec-table td {\n    color: #1a1a1a;\n    font-family: ui-monospace, \"SF Mono\", Menlo, Consolas, monospace;\n    font-size: 0.92em;\n  }\n\n  \/* Compatibility list *\/\n  .gr52grid-compat-list {\n    margin: 0;\n    padding: 14px 16px 14px 32px;\n    background: #fff;\n    border: 1px solid #d8dde6;\n    border-top: none;\n    border-radius: 0 0 4px 4px;\n    list-style: square;\n    color: #1a1a1a;\n    font-size: 0.95em;\n  }\n  .gr52grid-compat-list li { padding: 2px 0; }\n  .gr52grid-compat-list li::marker { color: #8bc34a; }\n\n  \/* Cross-reference chip list *\/\n  .gr52grid-chips {\n    padding: 14px;\n    background: #fff;\n    border: 1px solid #d8dde6;\n    border-top: none;\n    border-radius: 0 0 4px 4px;\n    display: flex;\n    flex-wrap: wrap;\n    gap: 8px;\n  }\n  .gr52grid-chip {\n    background: #f0f3f8;\n    border: 1px solid #d8dde6;\n    color: #1a4d2e;\n    padding: 5px 12px;\n    border-radius: 4px;\n    font-family: ui-monospace, \"SF Mono\", Menlo, Consolas, monospace;\n    font-size: 0.88em;\n    font-weight: 600;\n  }\n\n  \/* Notes \/ FAQ *\/\n  .gr52grid-notes {\n    padding: 14px;\n    background: #fff;\n    border: 1px solid #d8dde6;\n    border-top: none;\n    border-radius: 0 0 4px 4px;\n  }\n  .gr52grid-note-item { padding: 8px 0; border-bottom: 1px solid #eef1f6; }\n  .gr52grid-note-item:last-child { border-bottom: none; }\n  .gr52grid-note-q { font-weight: 600; color: #1a4d2e; margin: 0 0 3px; font-size: 0.95em; }\n  .gr52grid-note-a { margin: 0; color: #333; font-size: 0.93em; }\n\n  \/* Footer *\/\n  .gr52grid-footer {\n    border-top: 1px solid #d8dde6;\n    padding-top: 12px;\n    margin-top: 24px;\n    text-align: center;\n    color: #555;\n    font-size: 0.88em;\n  }\n  .gr52grid-footer .gr52grid-dot {\n    color: #8bc34a;\n    margin: 0 8px;\n    font-weight: 700;\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"gr52grid-wrap\"\u003e\n\n  \u003cheader class=\"gr52grid-header\"\u003e\n    \u003ch2\u003eFilbur APCFGR52 FC-9890 DE Filter Grid, 18 x 17-3\/4 inch, Sta-Rite Swimquip DES60 Offset Port\u003c\/h2\u003e\n    \u003cp class=\"gr52grid-subtitle\"\u003e18 in x 17-3\/4 in rectangular DE grid with offset exit port for the Sta-Rite Swimquip DES60 filter.\u003c\/p\u003e\n  \u003c\/header\u003e\n\n  \u003cp class=\"gr52grid-intro\"\u003eThe \u003cstrong\u003eFilbur APCFGR52 (FC-9890)\u003c\/strong\u003e is the 18 in x 17-3\/4 in rectangular replacement DE filter grid for the Sta-Rite Swimquip DES60 diatomaceous earth filter. It seats on your existing manifold through the offset exit port and rebuilds the filtration surface with mildew-resistant polypropylene cloth, so your pump runs at design flow and your water comes back clear. This is the direct one-to-one replacement for \u003cstrong\u003eUnicel FG-3917\u003c\/strong\u003e and Sta-Rite OEM part \u003cstrong\u003e239000142\u003c\/strong\u003e.\u003c\/p\u003e\n\n  \n    \n    \u003csection class=\"gr52grid-section\"\u003e\n      \u003cdiv class=\"gr52grid-section-heading\"\u003eIdentification\u003c\/div\u003e\n      \u003ctable class=\"gr52grid-spec-table\"\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eFilbur\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel \/ MPN\u003c\/th\u003e\n\u003ctd\u003eAPCFGR52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilbur Cross\u003c\/th\u003e\n\u003ctd\u003eFC-9890\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUnicel Cross\u003c\/th\u003e\n\u003ctd\u003eFG-3917\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReplaces OEM\u003c\/th\u003e\n\u003ctd\u003eSta-Rite 239000142\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePST SKU\u003c\/th\u003e\n\u003ctd\u003ePST-APCFGR52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eDE Filter Grid\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/section\u003e\n    \n    \u003csection class=\"gr52grid-section\"\u003e\n      \u003cdiv class=\"gr52grid-section-heading\"\u003eDimensions \u0026amp; Fit\u003c\/div\u003e\n      \u003ctable class=\"gr52grid-spec-table\"\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003cth\u003eGrid Length\u003c\/th\u003e\n\u003ctd\u003e18 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrid Width\u003c\/th\u003e\n\u003ctd\u003e17-3\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eRectangular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePort\u003c\/th\u003e\n\u003ctd\u003eOffset exit port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMount Style\u003c\/th\u003e\n\u003ctd\u003eSeats on existing OEM manifold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits Filter\u003c\/th\u003e\n\u003ctd\u003eSta-Rite Swimquip DES60\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/section\u003e\n    \n    \u003csection class=\"gr52grid-section\"\u003e\n      \u003cdiv class=\"gr52grid-section-heading\"\u003eConstruction\u003c\/div\u003e\n      \u003ctable class=\"gr52grid-spec-table\"\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003cth\u003eCloth Material\u003c\/th\u003e\n\u003ctd\u003eMildew-resistant polypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeave\u003c\/th\u003e\n\u003ctd\u003eTight weave for controlled permeability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResistance\u003c\/th\u003e\n\u003ctd\u003eRot, mildew, and pool-chemical resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003ctd\u003eDiatomaceous earth (DE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e1 Year Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/section\u003e\n    \n  \n\n  \n  \u003csection class=\"gr52grid-section\"\u003e\n    \u003cdiv class=\"gr52grid-section-heading\"\u003eCompatibility\u003c\/div\u003e\n    \u003cul class=\"gr52grid-compat-list\"\u003e\n      \u003cli\u003eSta-Rite Swimquip DES60 vertical DE filter using the 18 x 17-3\/4 in offset exit port grid\u003c\/li\u003e\n\u003cli\u003eSwimquip grid sets that call for the 17-3\/4 in offset port rectangular element\u003c\/li\u003e\n\u003cli\u003eAny Sta-Rite Swimquip DES grid assembly built around the 18 x 17-3\/4 in offset element\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n  \n\n  \n  \u003csection class=\"gr52grid-section\"\u003e\n    \u003cdiv class=\"gr52grid-section-heading\"\u003eCross-References\u003c\/div\u003e\n    \u003cdiv class=\"gr52grid-chips\"\u003e\n      \u003cspan class=\"gr52grid-chip\"\u003eAPCFG3917\u003c\/span\u003e\u003cspan class=\"gr52grid-chip\"\u003eFG-3917\u003c\/span\u003e\u003cspan class=\"gr52grid-chip\"\u003eFG3917\u003c\/span\u003e\u003cspan class=\"gr52grid-chip\"\u003eFC-9890\u003c\/span\u003e\u003cspan class=\"gr52grid-chip\"\u003e239000142\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n  \n\n  \n  \u003csection class=\"gr52grid-section\"\u003e\n    \u003cdiv class=\"gr52grid-section-heading\"\u003eNotes\u003c\/div\u003e\n    \u003cdiv class=\"gr52grid-notes\"\u003e\n      \n      \u003cdiv class=\"gr52grid-note-item\"\u003e\n        \u003cp class=\"gr52grid-note-q\"\u003eWill the FC-9890 replace my Unicel FG-3917 or Sta-Rite 239000142 grid?\u003c\/p\u003e\n        \u003cp class=\"gr52grid-note-a\"\u003eYes. The Filbur \u003cstrong\u003eFC-9890 (APCFGR52)\u003c\/strong\u003e is a direct one-to-one replacement for \u003cstrong\u003eUnicel FG-3917\u003c\/strong\u003e and Sta-Rite OEM part \u003cstrong\u003e239000142\u003c\/strong\u003e. Same 18 x 17-3\/4 in rectangular footprint and the same offset exit port, so it seats on your existing Swimquip manifold without modification.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \n      \u003cdiv class=\"gr52grid-note-item\"\u003e\n        \u003cp class=\"gr52grid-note-q\"\u003eWhich filter does this 18 x 17-3\/4 inch grid fit?\u003c\/p\u003e\n        \u003cp class=\"gr52grid-note-a\"\u003eIt is the offset exit port element for the \u003cstrong\u003eSta-Rite Swimquip DES60\u003c\/strong\u003e vertical DE filter. A DES60 grid set mixes several element sizes, so this one fills the 18 x 17-3\/4 in offset position. Pull the matching grid and measure it against these dimensions before you order, and if more than one grid is torn or flattened, replace the full set so new and old cloth load DE evenly.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \n      \u003cdiv class=\"gr52grid-note-item\"\u003e\n        \u003cp class=\"gr52grid-note-q\"\u003eCan I replace one of these myself?\u003c\/p\u003e\n        \u003cp class=\"gr52grid-note-a\"\u003eYes. Shut the pump off, bleed pressure at the air relief, open the filter, lift the grid assembly, and seat this replacement on the same manifold posts through the offset exit port. Reassemble and recharge with fresh diatomaceous earth to your filter's square-footage rating. No tools beyond what the filter teardown already requires.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \n    \u003c\/div\u003e\n  \u003c\/section\u003e\n  \n\n  \u003cfooter class=\"gr52grid-footer\"\u003e\n    Free Shipping\u003cspan class=\"gr52grid-dot\"\u003e•\u003c\/span\u003e30-Day Returns\u003cspan class=\"gr52grid-dot\"\u003e•\u003c\/span\u003e1-Year Warranty\u003cspan class=\"gr52grid-dot\"\u003e•\u003c\/span\u003eAuthorized Filbur Dealer\n  \u003c\/footer\u003e\n\n\u003c\/div\u003e\n","brand":"Filbur","offers":[{"title":"Default Title","offer_id":44083961299009,"sku":"PST-APCFGR52","price":25.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/1623\/0209\/files\/APCFGR52.jpg?v=1782366113","url":"https:\/\/www.pstpoolsupplies.com\/products\/filbur-apcfgr52-18-x-17-3-4-rect-starite-de-grid-239000142","provider":"PST Pool Supplies","version":"1.0","type":"link"}