Check the listing for details. Spiropure CBR2-10 Lead Mercury Reduction Flow Restrictor Carbon Water Filters(2). Color: White, Condition: New, Made in China. Listed at 19.87 USD. The Spiropure CBR2-10 Lead Mercury Reduction Flow Restrictor Carbon Water Filters are universal whole house cartridges that can reduce lead and mercury contaminants in your water supply. With a filter life of 6 months and a flow rate range of 0.5 - 1.0 gallons per minute, these filters are compatible with Pentek models and are suitable for whole house filtration. Made of plastic and metal materials sourced from China, these cartridges are designed for easy installation and effective filtration. The Spiropure brand ensures quality and reliability in removing harmful contaminants from your water, making them an essential component for maintaining clean and safe drinking water in your home.