Unicel C-2303 Replacement Cartridge Filter (8.5 sq ft)
Part # C-2303 — a high-quality replacement cartridge from Unicel designed for spa and small pool filtration systems. This compact filter element provides approximately 8.5 square feet of pleated filtration media to maintain clean, clear water in low-volume systems.
Key Features
- Approximate dimensions: 17 1/16″ length × 2 7/8″ outer diameter.
- Both ends open with an inner diameter of approximately 2 1/8″ for easy drop-in installation.
- Provides about 8.5 sq ft of filtration area with 150 pleats for efficient debris capture.
- Durable polyester filtration media engineered for long-term chemical and pressure resistance.
- Direct replacement for several OEM cartridges used in compact spa and hot-tub filtration systems.
Typical Applications
This cartridge is ideal for spas, hot tubs, and small pool systems that use a compact cartridge filter element. It is typically replaced when pressure increases, water clarity drops, or pleats show signs of wear or deformation.
Installation & Compatibility Notes
Turn off the pump and relieve system pressure before opening the filter housing. Remove the old cartridge and clean any debris from inside the tank. Insert the new Unicel C-2303 cartridge, ensuring correct seating and alignment on the filter manifold. Reassemble the housing and verify proper flow and pressure once the system is restarted.
Why Choose This Cartridge?
The Unicel C-2303 offers dependable performance in a compact size, making it suitable for tight equipment spaces. Its strong pleat structure and quality filtration media help extend service intervals and maintain consistently clear water.
Maintenance Tips
- Rinse the cartridge every 4–6 weeks or when system pressure rises noticeably above the clean starting level.
- Use a gentle hose spray to clean between pleats; avoid high-pressure sprayers that may damage the media.
- Perform an annual deep-clean soak using a cartridge cleaner to remove oils and fine debris.
- Inspect for cracked end caps, torn pleats, or softened media; replace the cartridge if any damage is observed.
