{"product_id":"filbur-rectangular-diatomaceous-earth-grid-filter-cartridge-18-inch-by-9-11-16-inch-center-port-fc-9820","title":"Filbur Rectangular Diatomaceous Earth Grid Filter Cartridge 18 Inch By 9-11\/16 Inch Center Port FC-9820","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Filbur Rectangular DE Grid FC-9820—the durable, OEM-grade replacement grid designed to elevate pool and spa filtration. Sized at 18\" x 9-11\/16\" with a center port, this DE grid is engineered to slot seamlessly into Filbur’s rectangular filter housings, delivering dependable performance season after season.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this DE grid stands out\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReinforced center cores\u003c\/strong\u003e with extruded PVC construction provide even stress distribution and higher debris loading, helping prevent cartridge collapse under heavy filtration duty and extending time between cleanings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAntimicrobial end caps\u003c\/strong\u003e—reinforced for strength and treated to repel odor-causing bacteria and mold—paired with end caps that have integrated fittings to simplify installation and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePremium filtration media\u003c\/strong\u003e using durable, high-quality polyester that resists wear, maintains flow, and supports longer service life in both salt pools and high-chlorine environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSharp pleat folds\u003c\/strong\u003e and \u003cstrong\u003eunique grid geometry\u003c\/strong\u003e prevent bridging, allowing dirt to penetrate deep into the folds for improved filtration efficiency and easier cleaning.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWider break-resistant bands\u003c\/strong\u003e keep pleats evenly spaced, reduce flutter from turbulence in the housing, and sustain optimal flow over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEmbossed part numbers\u003c\/strong\u003e simplify identification and re-ordering, ensuring you grab the exact FC-9820 replacement when it’s time for a swap.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFittings molded into the end caps\u003c\/strong\u003e eliminate the need for PAD adapters, preserving flow and simplifying replacement in your existing filtration setup.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eDesigned for real-world use\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThis rectangular DE grid thrives in demanding pool and spa environments. Its construction is optimized for:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eSaltwater systems, where resin and salt can accelerate wear on lesser designs.\u003c\/li\u003e \u003cli\u003eHigh-chlorine pools where durability and long-term performance matter for consistent water clarity.\u003c\/li\u003e \u003cli\u003eApplications requiring dependable debris loading without sacrificing flow or ease of cleaning.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the FC-9820 DE grid, you’ll notice fewer maintenance interruptions and more reliable filtration efficiency. The center port design supports straightforward installation in compatible housings, while the robust core and end-cap construction help minimize downtime caused by component failures.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePool owners upgrading aging filter grids who want OEM-grade performance and longer intervals between cleanings.\u003c\/li\u003e \u003cli\u003eSpa enthusiasts seeking consistent filtration and odor\/mold resistance in humid, chemical-heavy environments.\u003c\/li\u003e \u003cli\u003eService professionals aiming to stock a reliable, long-lasting rectangular DE grid that resists deterioration from salt and chlorine.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for best results\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eInspect end caps and center cores during every replacement cycle; Filbur’s reinforced components are designed to resist cracking and fiber fatigue.\u003c\/li\u003e \u003cli\u003eWhen swapping to FC-9820, ensure the housing is compatible with a 18\" x 9-11\/16\" grid to preserve filtration efficiency and prevent flow restrictions.\u003c\/li\u003e \u003cli\u003eFor saltwater pools, rinse the grid gently with low-pressure water after a heavy debris period to prolong life and maintain peak performance.\u003c\/li\u003e \u003cli\u003eKeep an eye on embossed part numbers for quick re-ordering—consistent replacements prevent performance dips caused by worn grids.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUpgrade with Filbur’s Rectangular DE Grid FC-9820 and experience filtration that’s built to last, with reinforced components, smarter design, and attention to real-world pool and spa needs. Clean water, easier maintenance, and dependable reliability—week after week, season after season.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":40241553145898,"sku":"FC-9820","price":39.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/4014\/1354\/products\/14-176-1125_xl.jpg?v=1769976123","url":"https:\/\/bathparts.com\/en-um\/products\/filbur-rectangular-diatomaceous-earth-grid-filter-cartridge-18-inch-by-9-11-16-inch-center-port-fc-9820","provider":"Bath \u0026 Spa Superstore","version":"1.0","type":"link"}