💧 Unicel 8CH-66 Spa & Hot Tub Filter Cartridge – 60 Sq. Ft., 9-1/2" Length, 2" MPT Part #8CH-66 | Premium Spa & Hot Tub Filtration | Durable Reusable Cartridge The Unicel 8CH-66 filter cartridge is designed to deliver superior water clarity and longer filter cycles for a range of hot tubs and spas. Manufactured with high-quality Reemay filtration media, this replacement cartridge efficiently traps dirt, debris, and contaminants, delivering crystal clear water and protecting your spa equipment. ✅ Product Features: 🌀 60 Sq. Ft. Filtration Area – Provides extended cleaning cycles and efficient water flow 📏 Dimensions: • Length: 9-1/2" • Diameter: 8-1/2" • Top: Closed • Bottom: 2" Male Pipe Thread (MPT) 🧩 Compatible With: • Caldera Spas • Dimension One Spas (select models) • Freeflow Spas • Hot Spring Spas (select models) • Watkins Manufacturing 🔄 Replaces/Alternative Part Numbers: • 0969601-03, 0969601, 0969601-03-R, 0969601-R, 0969601-03, PWW50L, FC-0536, C-8466 💪 Durable Construction – Reinforced end caps with antimicrobial protection resist chlorine and chemical wear 🌊 Easy Maintenance – Simply rinse with water monthly and soak in filter cleaner as needed 📋 Directions for Use: 1. Turn off spa power and remove the filter cartridge from housing. 2. Rinse thoroughly with a garden hose, cleaning between pleats. 3. Soak in a filter cleaner solution for deep cleaning every 1-2 months. 4. Replace annually or as needed for optimal water quality. ⚠️ Regular filter replacement ensures efficient water circulation, improved heating, and extends the life of spa pumps and heaters. Always confirm dimensions and thread type before ordering. 🛠️ Premier Pool & Spa offers expert advice and a full selection of Unicel replacement filters for all major spa brands. Need help finding the right fit? Contact our team for personalized recommendations.