The Unicel 4CH-15 Cartridge Filter is a high-quality 15-square-foot replacement filter designed for Waterway and compatible spa and hot tub filtration systems. Engineered with precision and durability, it provides superior debris capture and water clarity, ensuring clean, healthy spa water with minimal maintenance.

Key Features

Genuine Unicel replacement cartridge filter (Model 4CH-15)
15 sq. ft. of filtration surface area for efficient debris removal
Compatible with Waterway and other select spa and hot tub filter housings
Premium polyester pleated media ensures long-lasting filtration performance
End caps constructed from durable, chemical-resistant thermoplastic
Replaces Waterway filter cartridges with matching dimensions
Easy to clean and reinstall for extended service life
Rigid core design maintains structural integrity under pressure
Helps maintain balanced water chemistry and clear spa water
Ideal for residential spas, hot tubs, and small pool filtration systems

Product Overview
The Unicel 4CH-15 Cartridge Filter offers reliable and efficient filtration for Waterway and compatible spa systems. With 15 square feet of pleated polyester media, it effectively traps fine debris, oils, and contaminants, promoting clear and hygienic water.

Built with durable end caps and a strong internal core, this replacement filter withstands repeated cleanings and exposure to spa chemicals. Easy to install and maintain, the Unicel 4CH-15 provides long-lasting performance and excellent water quality, making it an ideal choice for spa owners seeking consistent, low-maintenance filtration.

Unicel | 4CH-15 | Cartridge Filter – 15 Sq. Ft. Replacement for Waterway Spa Filters