The Brondell HF-25 Pearl Carbon Block Filter For Brondell H625 Pearl Water Filtration System is a powerful replacement water filter that will help remove industrial chemicals, herbicides, pesticides, VOCs, Endrin, Atrazine, Chlorobenzene, Methoxychlor, Trihalomethanes, Aesthetic Chlorine and other unwanted particles from your drinking water. This replacement water filter easily installs into your Brondell H625 Pearl Water Filtration System or even your Brondell H620 Pearl Water Filtration System with an adapter, and is manufactured from a durable thermoplastic resin so it is also resistant to mold, mildew, and rust. this water filter has a 150 gallon overall capacity as well as a 6 month lifespan, and once installed, will never require regular maintenance. This replacement water filter has also been certified by the Water Quality Association for performance. If you are looking for a replacement water filter to use in your Brondell H625, or H620 Pearl Water Filtration System, the Brondell HF-25 Pearl Carbon Block Filter is for you.