Selecting and deleting rows based on criteria

[snb]

I still think this is sufficient for range starting in row 13:

Sub M_snb()
    For Each sh In Sheets
        sh.UsedRange.Columns(1).Offset(12).SpecialCells(4).EntireRow.Delete
        sh.Rows(11).SpecialCells(4).EntireColumn.Delete
    Next
End Sub