Premier Series Filter | 4th Stage Coconut Carbon Shell Post-Filter

Aquasure Premier Series 4th Stage Quick Twist Coconut Carbon Shell Post-Stage Filter The Aquasure AF-PR4 is an encased post-taste refining carbon filter that is built for our Premier Series under-the-sink Quick Twist Reverse Osmosis Drinking Water System. The Coconut Shell constructed carbon block filter removes any residual water taste that was not removed from the previous stages and adds a touch of sweetness from the coconut shell carbon.