Swimquip 18X11 Pool & Spa Replacement Filter Cartridge Comp.
• Swimquip offset port
• Diatomaceous Earth filter grid
• Reinforced center core
• Part number: Swimquip 18X11 R / Filbur FC-9870
• Dimensions: 11” x 18”
The Swimquip 18X11 R Compatible Pool & Spa Filter, also known as the Filbur FC-9870, is a replacement grid spa and pool filter cartridge. This spa filter replaces the Unicel FG-3911.
The compatible Swimquip 18X11 from Filbur is designed to exact OEM specification and is suitable for Diatomaceous Earth filter applications. This DE filter grid requires no pool filter pad adapters. This swimming pool filter’s offset port features a reinforced center core for additional durability. Plus this Swimquip has long lasting welded seams, and filter media which resists fraying, unraveling and won’t react to common pool and spa chemicals.
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