The Unicel 5CH-45 Cartridge Filter is a premium 45-square-foot replacement filter engineered for spas and hot tubs that demand high-performance filtration. Designed with precision-pleated polyester media and a durable 1-1/2" MPT threaded fitting, it ensures superior debris capture, consistent water flow, and long-lasting durability.

Key Features

Genuine Unicel replacement cartridge filter (Model 5CH-45)
45 sq. ft. of pleated polyester filtration media for excellent dirt-holding capacity
Measures 5-3/16" diameter x 10" length
1-1/2" MPT (male threaded) bottom fitting for secure installation
High-quality polyester media resists chemicals, oils, and pressure fatigue
Reinforced center core provides structural integrity under heavy flow
Compatible with Waterway®, Sundance®, and select other spa filter systems
Easy to install, clean, and maintain for long-term reliability
Promotes clear, balanced, and hygienic spa water
Ideal for residential spas and hot tubs requiring efficient, compact filtration

Product Overview
The Unicel 5CH-45 Cartridge Filter delivers reliable, high-efficiency filtration performance for spas and hot tubs. Its precision-pleated polyester media effectively captures fine debris and contaminants, helping maintain sparkling, healthy water while reducing cleaning frequency.

Built with durable materials and a reinforced internal core, the 5CH-45 withstands high flow rates and repeated chemical exposure. Its 1-1/2" MPT threaded connection ensures a tight, leak-free fit in compatible filter housings. Perfect for demanding spa systems, this Unicel cartridge offers long service life, consistent filtration, and easy maintenance—making it a trusted choice among spa professionals and homeowners alike.

Unicel | 5CH-45 | Cartridge Filter – 45 Sq. Ft., 10" Length, 1-1/2" MPT Threaded Fitting