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.