2 Pieces Spa Filter Cartridge for Pleatco PWW50 Hot Tub Filters, Replacement for Unicel C6CH-940, Jacuzzi Spa Business Whirlpool, and Swimming Pool Systems. Made from 100% polyester fiber material for enhanced dirt and debris capture. Designed for efficient filtration in pool and spa cleaning systems. Product Size: Filter Diameter: 150 mm (5.9 in), Height: 241 mm (9.5 in), Thread Size: 46.5 mm (1.8 in). Features: Collapsible design increases filter surface area, reduces pressure differential, supports higher flow rates, and extends service life. Reusable and easy to clean, helping to reduce maintenance costs. Compatibility: Fits most indoor and outdoor, above-ground pools, hot tubs, and spa systems. Function: Helps maintain optimal water quality by capturing dirt and contaminants. Ideal for keeping spa systems running efficiently and water clean and clear. Simply install into your existing system for reliable filtration performance.