InactiveListBorderVisible Property
A Boolean value that specifies whether list borders are visible when a list is not active. Returns True if the border is visible. Read/write Boolean.
expression.InactiveListBorderVisible
expression Required. An expression that returns one of the objects in the Applies To list.
Remarks
Setting this property will affect all the lists that are on the worksheet.
Example
The following example hides the borders of inactive lists in the workbook.
Sub HideListBorders()
ActiveWorkbook.InactiveListBorderVisible = False
End Sub