The Unicel C-8409 Cartridge Filter is a 90 square foot replacement specifically designed for the Hayward Star-Clear Plus C900 filter. Serving as a direct replacement for the Hayward CX900RE cartridge, it delivers exceptional debris capture and consistent water clarity. Constructed with 174 pleats of durable 4-oz spunbonded polyester media, this cartridge provides long service life while maintaining optimal flow rates. Measuring 17⅜″ in length and 8 15⁄16″ in outer diameter with 4″ open end caps, it is built to OEM standards for a precise fit and reliable performance in residential or commercial pool systems.
Highlights
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Direct Hayward Replacement: Engineered as a direct substitute for the Hayward CX900RE, designed to fit perfectly in the Star-Clear Plus C900 filter housing.
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High-Capacity 90 Sq. Ft. Media: Features 174 pleats of 4-oz polyester material, offering superior surface area to trap fine dirt and debris for longer cleaning cycles.
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OEM-Precision Dimensions: Measures 17⅜″ long × 8 15⁄16″ diameter with 4″ open end caps, ensuring a seamless installation without modifications.
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Durable Polyester Construction: Spunbonded polyester media and reinforced end caps withstand repeated cleanings, chemical exposure, and daily pool use.
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Improves Filtration Efficiency: Delivers clearer, healthier water while easing the workload on the pump and extending the overall efficiency of the pool system.
Compatibility
- Hayward C900 Star-Clear Plus Filters
Additional Info
This section covers the Unicel C-8409 Cartridge Filter, a 90 sq. ft. replacement for Hayward Star-Clear Plus C900. Learn about fitment, maintenance, and how to confirm availability in store.
Cartridge Dimensions and Fitment
The C-8409 measures 17⅜″ in length and 8 15⁄16″ in diameter with 4″ open ends. It directly replaces the Hayward CX900RE in Star-Clear Plus C900 filters.
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When to Replace the Cartridge
Replace cartridges when filter pressure climbs 8–10 psi above normal or water clarity declines. C-8409’s 174 pleats extend time between cleanings.
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Buying C-8409 In Store
Bring your old cartridge for quick comparison. Local staff can verify cross-reference numbers like CX900RE for accuracy.
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