About This

• Replacement Spa Filters: Pack of 4 replacement 4CH-935 filter cartridges features 35 square feet (219 pleats) of 3-ounce basis weight media that catches debris and particles down to an average of 20 microns in size keeping your hot tub water clear
• Optimal Debris Capture: Hot tub filter has sharp, uniform pleat folds that maximize water flow, minimize pressure loss, and allow full use of the pleat surface to hold more debris
• Filter Media: Constructed with 100-percent polyester Reemay material that balances dirt-holding capacity, cleanability and durability with excellent chemical resistance properties
• Thread and Handle Type: Design includes a 2-inch female SAE thread and a v-groove semi-circular handle for easy cartridge removal and replacement; Durable end caps resist damage from chemicals
• Spa Fitment: Compatible with various spas including Waterway Plastics, Nordic Hot Tubs, Rising Dragon, and Master Spas; OD: 4-15/16 inches, Length: 9-1/4 inches