Unicel | C-4402 | 20 Sq. Ft. Replacement Cartridge Filter – Fits Aqua Spa Systems

The Unicel C-4402 20 Sq. Ft. Replacement Cartridge Filter is a high-performance spa filter designed to provide superior water clarity and long-lasting durability for Aqua Spa filtration systems. Crafted with premium pleated polyester media, this cartridge effectively traps fine dirt, oils, and debris while maintaining excellent water flow and pressure balance. Its precision-molded end caps and reinforced PVC center core ensure strength, reliability, and a leak-free fit under spa operating conditions. Easy to clean and reuse, the C-4402 delivers consistent filtration performance that keeps your spa water crystal clear and healthy.

Key Features

• 20 Sq. Ft. Filtration Capacity: Ideal for compact spa and hot tub systems, delivering efficient debris capture and excellent water circulation.

• Compatible with Aqua Spa Systems: Designed as a direct-fit replacement cartridge for Aqua Spa filters, ensuring proper fit and OEM-level performance.

• Durable Pleated Polyester Media: Constructed from high-quality Reemay® spunbond polyester for long-lasting strength and superior dirt-holding capacity.

• Reinforced Structural Core: Rigid PVC center core resists collapse under pressure, maintaining shape and consistent water flow through the cartridge.

• Washable & Reusable Design: Simple maintenance—rinse and reuse—extends cartridge lifespan, reduces waste, and lowers long-term maintenance costs.

Product Overview
The Unicel C-4402 20 Sq. Ft. Replacement Cartridge Filter is engineered to deliver exceptional filtration performance and durability in Aqua Spa and other compatible spa systems. Its pleated polyester media provides a large surface area for efficient dirt and debris capture, keeping water cleaner for longer while minimizing strain on your spa’s circulation system.

Each cartridge is built with Unicel’s commitment to quality, featuring precision-molded end caps for a secure, leak-free fit and a reinforced PVC core that maintains stability under high operating pressures. The Reemay® filtration fabric is resistant to chemicals, bacteria, and degradation caused by repeated use and cleaning, ensuring reliable performance over time.

Maintenance is straightforward—simply rinse off accumulated debris with a garden hose to restore flow and continue use. The C-4402 offers a cost-effective solution for spa owners seeking premium-quality water clarity and reduced maintenance downtime.