The Unicel 4CH-950 Cartridge Filter is a 25-square-foot high-quality replacement filter designed for spas and hot tubs. Engineered with durable pleated polyester media and a secure SAE threaded connection, this cartridge provides efficient debris removal, long service life, and consistently clear, balanced water for residential spa systems.

Key Features

Genuine Unicel replacement cartridge filter (Model 4CH-950)
25 sq. ft. of pleated polyester media for effective filtration performance
Measures 4-5/8" diameter x 12" length
Features SAE threaded fitting for secure, leak-free installation
Reinforced center core for strength under pressure and heavy flow
Premium polyester media resists degradation from chemicals and heat
Compatible with select Waterway, Jacuzzi, and other spa filter systems
Easy to clean and maintain, extending service intervals
Provides balanced water flow and consistent clarity
Ideal for spa and hot tub owners seeking durable, efficient filtration

Product Overview
The Unicel 4CH-950 Cartridge Filter offers superior filtration efficiency and reliability for spa and hot tub systems. Its precision-pleated polyester media captures fine particles, oils, and debris, maintaining crystal-clear, healthy water while minimizing strain on the pump and circulation system.

Designed for durability, this 25-square-foot filter features a sturdy internal core and SAE threaded fitting for secure, simple installation. Resistant to chemicals, heat, and repeated cleaning, the Unicel 4CH-950 ensures long-lasting performance and reduced maintenance—making it a trusted, high-efficiency replacement option for premium spa systems.

Unicel | 4CH-950 | Cartridge Filter – 25 Sq. Ft., 12" Length, SAE Threaded Fitting