ProOne G-Series 7" Gravity Filter Replacement is a high-quality ceramic and carbon filter designed for use with ProOne Big+ and Big II countertop gravity water systems. It effectively reduces microplastics, lead, and PFAS, ensuring safer drinking water for your family. The filter is NSF/ANSI-42 certified and independently lab tested to meet strict standards, providing confidence in its performance. Easy to install and clean, each filter lasts up to 6 months with regular use. Infused with silver, it inhibits bacterial growth, maintaining water purity. Suitable for use with lakes, streams, rainwater, and tap water, it is portable and perfect for emergencies, camping, or daily use. Factory-sealed, all duties included, shipped tracked from USA, arrives in 11-13 days.