This opened box of water filters contains 3 unopened packages of water filters...There are only 3 water filters in this box!!! Get great-tasting water with Brita Standard water filter replacement Switch to Brita and you can save money and replace 1800 single-use plastic bottles a year Reduce Chlorine (taste odor) Mercury, Copper, Zinc, Cadmium For the best tasting water, replace your water filter after 40 gallons or approximately every 2 months Compatible with all Brita pitchers and dispensers except Stream; Brita water filters are simple to replace with a pull top cap for easy removal; 16.9 oz water bottle