PRB25-IN Hot Tub Filter Replacement for Unicel C-4326, FC-2370, 2 Pack

Make Filtration System Work: Compatible with Pleatco PRB25-IN/PRB25-IN-M/PRB25-IN-4, Unicel C-4326/C-4401/C-4625, Filbur FC-2370/FC-2380/FC-2375M, Guardian 413-106, 3005845, 17-2327. Filter Dimensions: Length: 13-5/16; Outside Diameter: 5; Top & Bottom Openings: 2-1/8,NSF/ANSI 50 Certified: Tested and certified by NSF International against NSF/ANSI 50 for the use of safe materials. The trilobal pleated design captures 3x more debris than regular fabric, efficiently trapping leaves, hair, sand, and oils for cleaner water,Enduring and Long-Lasting: Corrosion-resistant end cap protects against chemical damage and high temperatures without melting. Strong polyester fiber resists deformation and breakage, ensuring multiple uses,Easy Maintenance: Trilobal structure repels large particles from entering the inside of the filter, ensuring they are spread out and preventing stains from building up in any one area. This design allows for easy and thorough rinsing,Reduce Cleaning Frequency: The free-flowing porous core design promotes even water flow and minimizes clogging, ensuring stable filtration system operation and reducing the need for frequent cleaning. It used to require cleaning every two weeks, now it's once a month