It is probably an identical filter made by the same factory with a different description written by different people because different agencies were involved.

It is probably an identical filter made by the same factory with a different description written by different people because different agencies were involved. I have no interest in buying and disassembling the filters to compare them but since they are both charcoal filters they are the same. If they were not, then one of them would be advertised as a charcoal filter and the other one would be advertised as a charcoal filter + some other filter.