Unicel | C-4401 | 35 Sq. Ft. Replacement Cartridge Filter Set (2-Pack) – Fits Rainbow DSF-35

The Unicel C-4401 35 Sq. Ft. Replacement Cartridge Filter Set (2-Pack) is a high-quality replacement designed for use with Rainbow DSF-35 pool and spa filtration systems. Each cartridge features heavy-duty pleated polyester media that provides exceptional dirt-trapping efficiency and long-lasting performance. With precision-molded end caps and a reinforced PVC core, this 2-cartridge set ensures durability, stability, and optimal water flow. Easy to clean and reuse, the C-4401 offers dependable filtration and consistent water clarity, making it an ideal choice for maintaining a healthy, crystal-clear pool or spa.

Key Features

• 2-Cartridge Replacement Set: Includes two premium 35 sq. ft. filter cartridges designed to restore and maintain efficient water filtration in Rainbow DSF-35 systems.

• Durable Pleated Polyester Media: Made from Reemay® filtration fabric that captures fine dirt, debris, and oils while allowing excellent water flow and minimal pressure loss.

• Reinforced PVC Core: Provides superior strength and resistance to collapse, ensuring consistent filtration performance even under high-pressure conditions.

• Precision-Molded End Caps: Chemical-resistant end caps ensure a watertight seal and long-lasting durability against pool and spa chemicals.

• Easy Maintenance & Reusable Design: Washable pleated media makes cleaning simple, extending cartridge life and reducing long-term maintenance costs.

Product Overview
The Unicel C-4401 35 Sq. Ft. Replacement Cartridge Filter Set (2-Pack) delivers premium performance and value for Rainbow DSF-35 filtration systems. Designed to trap fine debris, oils, and contaminants, this two-cartridge set provides superior water clarity and helps your filtration system operate efficiently. The pleated polyester design maximizes surface area for optimal debris capture and extended cleaning intervals, reducing maintenance while improving system flow.

Each cartridge is engineered with precision-molded end caps for a secure fit and a reinforced PVC center core that maintains stability under high water pressure. The Reemay® polyester filter fabric resists chemical degradation and bacterial growth, ensuring dependable operation through multiple cleaning cycles. Cleaning is easy—simply rinse and reuse to maintain strong performance and clear water.

Perfect for both residential and commercial pool and spa systems, the Unicel C-4401 provides the same reliable fit and filtration as OEM filters but with superior value and longevity.