Unicel 4CH-24 Replacement 25 Sq Ft Filter Cartridge for Hot Tub Spa (Open Box) CategoryFull_Home & Garden | Kitchen & Dining | Kitchen Tools & Utensils | Kitchen Organizers | Utensil & Flatware Trays Recommended for indoor or outdoor

Recommended for indoor or outdoor use

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Unicel 4CH-24 Replacement 25 Sq Ft Filter Cartridge for Hot Tub Spa (Open Box) CategoryFull_Home & Garden | Kitchen & Dining | Kitchen Tools & Utensils | Kitchen Organizers | Utensil & Flatware Trays Recommended for indoor or outdoor####This item is open box and is in very good condition!#### Replacement 4CH 24 filter cartridge ensures your water stays clear so you can enjoy relaxing in your spa or hot tub Features 25 square feet of 3 ounce basis weight media (173 pleats) that catches debris and particles down to an average of 20 microns in size Sharp, uniform pleat folds maximize water flow, minimize pressure loss, and allow full use of the pleat surface to hold more debris