Effectively remove contaminants from your drinking water by using the Brita 3-Pack Maxtra Water Filter Cartridge. These cartridges fit any BRITA MAXTRA jug in your home and each lasts for approximately 4 weeks, purifying up to 100L of hard water. Designed to reduce limescale, chlorine and other impurities found in household plumbing, the white cartridges are 100% recyclable and can be used immediately without any need for pre-soaking.