FILTAPAC is an alternative to the Carver/Truma filter. It is a straight forward replacement needing no adaptation. Easy to replace. It eliminates any possibility of carbon escaping into your water system reducing damage to pumps and pressure switches. It recycles the major plastic parts of the filter resulting in less damage to the environment. Simply using the highest quality carbon, which traps and kills bacteria for the longest possible period of time, ensuring the quality of your drinking water