Condensers and electronic assemblies

A condenser comprising:

• a first vertical wall defining a first plurality of vertical condensation channels that extend in a vertical direction within the first vertical wall;
• a second vertical wall defining a second plurality of vertical condensation channels that extend in the vertical direction within the second vertical wall;
• and
• a first plurality of fins, wherein a first one of the first plurality of fins contacts the first vertical wall and does not contact the second vertical wall, a second one of the first plurality of fins contacts the second vertical wall and does not contact the first vertical wall, and the first one of the first plurality of fins contacts the second one of the first plurality of fins, and
• adjacent ones of the first plurality of fins create an airflow opening with surfaces of the first vertical wall, the airflow opening extending vertically and configured to enable airflow along the vertical direction.