Toyota Ion Exchange Issue
Note in the upper right: Example of mesh not welded. Below shows the hole in the mesh is not lined up with the hole in the frame.
Some 2016-2019 Toyota Mirai Hybrid Ion Exchange service parts may have experienced a manufacturing issue where the mesh is welded and/or adhered improperly to the frame. When replacing an Ion Exchanger, check for improper welding or hole alignment of the mesh material on the service part before installation.