Our EPWPRF under sink replacement filter is made with a highly absorptive, positively-charged carbon block and you can get it shipped for free. This premium main faucet replacement filter is made with a highly absorptive carbon block. The positively-charged material eliminates more contaminants from your water versus a regular sediment filter. This replacement filter is suitable with an EcoPure EPWPFF system and is what drives the elimination of harmful dissolved sediments that creates cleaner and safer water for your family. Maximize the results of our under sink replacement filter by changing it every 6 months. The quick-change design allows you to change the filter without shutting off your water and it only takes minutes to perform.