OMNIFilter CB3 Carbon Water Filter, 10" Under Sink Sink Carbon Block Taste & Odor Replacement Filter Cartridge, 10" x 2.5", 0.5 Micron

Pentair OMNIFilter CB3 Carbon Water Filter, 10" Undersink Carbon Block Taste & Odor Replacement Filter Cartridge, NSF Certified to Reduce PFOA/PFOS, 10" x 2.5", 0.5 Micron

Pentair OMNIFilter RS14 Sediment Water Filter, 10-Inch, Standard Whole House Polypropylene Spun Sediment Replacement Filter Cartridge, 10" x 2.5", 10 Micron, Pack of 2

Captain O-Ring - K4 Replacement O-Ring Kit for OmniFilter K4, CBF1, CBF3, SFM2, U30, USM2, OT32, RO2000, RO2050, and More (2 Sets, 8 Orings)