{"product_id":"filbur-rectangular-de-grid-filter-cartridge-18-by-12-and-seven-sixteenths-inches-center-port-fc-9830","title":"Filbur Rectangular DE Grid Filter Cartridge 18 by 12 and Seven Sixteenths Inches Center Port FC-9830","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Filbur Rectangular Diatomaceous Earth (DE) Grid — a purpose-built replacement designed for 18\" x 12-7\/16\" DE filter housings with a center port. Model FC-9830 brings Filbur’s OEM-grade engineering to your pool or spa, delivering dependable DE filtration with long-lasting performance you can rely on.\u003c\/p\u003e \u003ch2\u003eEngineered for durable, high-performance DE filtration\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReinforced center spine\u003c\/strong\u003e provides even stress distribution, helping prevent grid deformation as the DE bed loads up and your filter runs through backwashes.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRectangular, high-surface-area grid\u003c\/strong\u003e promotes uniform Diatomaceous Earth distribution and minimizes channeling, yielding clearer water and more efficient filtration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCenter-port integration\u003c\/strong\u003e aligns cleanly with standard DE filter manifolds, simplifying installation and reducing potential flow restrictions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable PVC construction\u003c\/strong\u003e stands up to chlorine, saltwater, and routine cleaning cycles in both pools and spas.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for long life\u003c\/strong\u003e with a robust grid that resists cracking and warping, delivering dependable performance over time.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters for you\u003c\/h3\u003e\n\u003cp\u003eChoosing the FC-9830 DE grid means fewer replacements, more consistent filtration, and consistently clear water. Built to Filbur’s OEM standards, it’s engineered to maintain optimal flow and filtration quality, so you spend less time on maintenance and more time enjoying your pool or spa.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eResidential pools equipped with DE filtration systems that require a precise rectangular grid replacement\u003c\/li\u003e \u003cli\u003eIn-ground spas where stable DE distribution supports pristine, chemically balanced water\u003c\/li\u003e \u003cli\u003eSeasonal pool maintenance programs needing reliable, plug-and-play grid replacements that fit the original housing\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it compares to typical grids\u003c\/h3\u003e\n\u003cp\u003eUnlike generic grids, the Filbur FC-9830 combines a reinforced center spine with a meticulously engineered rectangular grid pattern. This design delivers more even DE distribution, reduces flow bottlenecks, and stands up to the rigors of salt and chlorine-heavy environments, providing a longer service life and more consistent water clarity.\u003c\/p\u003e \u003ch3\u003eCare and installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePower down the system and relieve pressure before replacing the grid.\u003c\/li\u003e \u003cli\u003eInspect the filter housing for cracks or warping; replace any compromised components before reinstalling the grid.\u003c\/li\u003e \u003cli\u003eRinse the grid thoroughly after backwashing to remove accumulated debris and prevent residual cloudiness.\u003c\/li\u003e \u003cli\u003eRegularly monitor water clarity and flow rate; a noticeable drop may indicate the grid needs replacement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 18\" x 12-7\/16\"\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e FC-9830\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePort:\u003c\/strong\u003e Center Port\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Extruded PVC core with durable DE grid matrix\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":40241552752682,"sku":"FC-9830","price":41.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/4014\/1354\/products\/14-176-1130_xl.jpg?v=1769976123","url":"https:\/\/bathparts.com\/products\/filbur-rectangular-de-grid-filter-cartridge-18-by-12-and-seven-sixteenths-inches-center-port-fc-9830","provider":"Bath \u0026 Spa Superstore","version":"1.0","type":"link"}