This is the middle replacement filter for the Ultra Pur Reverse Osmosis drinking water system. It is recommended to change this filter every 2-3 years to ensure the highest quality filtering.
This does not include the Pre/Post replacement filters. The Pre/Post Reverse Osmosis replacement filters can be found here.
PLEASE NOTE: These filters are NOT compatible with the Pure Blue drinking water system. If your system is Blues, this is NOT the correct filter. Your filter can be found here.