Public Sub NMCode()
Dim strFirst As String
Dim rngFirst As Range
Application.ScreenUpdating = False
With Range("K1:N100")
Set rngFirst = .Find(vbNullString, [K1], xlValues, xlWhole, xlByRows, xlNext, False)
strFirst = rngFirst.Address
Do
rngFirst.Value = vbNullString
Set rngFirst = .FindNext(rngFirst)
Loop While rngFirst.Address <> strFirst
End With
Application.ScreenUpdating = True
End Sub