💦 Filter Your World: Because Clean Water is a Lifestyle! NSF certified for your peace of mind. Say goodbye to visible sediment and hello to freshness! Experience crystal-clear water from every tap. No plumber needed—replace filters in a snap! Designed for households of 1-4, ensuring durability. Whole house use 40 micron filtration Easy replacement The AO Smith 2.5"x10" 40 Micron Sediment Water Filter Replacement Cartridge is designed for whole house filtration systems, ensuring clean and sediment-free water for households of 1-4 people. This 2-pack of genuine A.O. Smith filters is easy to replace every 6 months without the need for a plumber, and is NSF certified for optimal performance.