Unicel Replacement Filter Cartridge 25 sf | 4CH-24

Description

Unicel 4CH-24 Spa/Pool Filter Cartridge (25 sq ft)

The Unicel 4CH-24 is a high-quality replacement filter cartridge commonly used in spas and small pool filtration systems. It offers reliable filtration performance, helping keep water clear by capturing debris, oils, and fine particles.

Key Features

• 25 sq ft of pleated filter mediaenough surface area for effective filtration on smaller pools or spas.
• 173 pleats with spun-bonded polyester mediaenhances dirt-holding capacity and maintains strong flow.
• Compact size (about 9.75 long4.625 outer diameter)fits many common spa and small pool filter housings.
• Top-load design with molded cone handlemakes cartridge removal and replacement quick and easy.
• Bottom end cap with 1.5 MPT threaded outletworks with standard spa/pool plumbing configurations.
• Chemical-resistant and designed for repeated cleaning cycles without degradation of media.

Specifications

• Manufacturer: Unicel
• Part Number: 4CH-24
• Filtration Area: 25 sq ft
• Pleat Count: 173
• Outer Diameter: ~4.625
• Length: ~9.75
• Top Cap: Molded cone handle (top-load style)
• Bottom Cap: 1.5 male-thread (MPT) outlet
• Media: Spun-bonded polyester filter media
• Typical Use: Spa and small pool cartridge filters, hot tubs, compact filtration systems

When to Replace / Use

Use the 4CH-24 when the existing cartridge is clogged, pleats are compressed or damaged, or filtration performance declines (e.g., reduced flow, cloudy water, more frequent cleanings). Its also ideal as a spare cartridge for regular maintenance cycles on spas or smaller pools.

Maintenance & Care Tips

• Rinse the cartridge regularly (every 24 weeks depending on use) to remove trapped debris and prolong media life.
• Periodically soak or deep-clean the cartridge with a spa-safe filter cleaner to remove oils, lotions, and organic buildup that normal rinsing cannot remove.
• Inspect pleats and end caps for tears, media collapse, or chemical wearreplace if any damage is observed.
• Keep a spare cartridge on handrotating filters allows one to dry between uses and extend overall cartridge life.