Set of 3 Universal 1 Micron 10"x2.5" Sediment filter cartridge for Reverse Osmosis, Whole House & Water Filters removes: dirt, silt, sand, rust, and scale particles fit 10"x2.5" standard filter housing 1 micron rating. Material: Spun Polypropylene Life time: 6 months for RO, 3 months for whole house filtration systems