Double-click a thickness table file under Thickness Tables in Catalog Data.
The table displays to the right of the Catalog Data in the Main Table List View.
Select a row or box to edit.
Enter the changes, or right-click the table, and use Remove Row, Cut, Copy, or Paste to edit the information.
The change displays.
Click File > Save to save the changes to the catalog.
Thickness table rows can be removed by removing the associated nominal size inside the associated size table.