Nested Case RowHeight Adjust

Original cumbersome IF structrure(it works but its slow)

Sub RowHeight()

Dim wSheet As Worksheet
Dim wBook As Workbook

Set wBook = ActiveWorkbook
Set wSheet = wBook.Sheets("Letter1")
wSheet.Activate
If Range("A7") = Range("ADDRESS") Then
Range("A7").RowHeight = 12.75
Else
Range("A7").RowHeight = 12.75
End If

If Range("A8") = Range("ADDRESS") Then
Range("A8").RowHeight = 12.75
Else
Range("A8").RowHeight = 12.75
End If

What I'm leaning towards to speed it up:

If ActiveSheet = Sheets("Letter1") then
Select Case
	blah
	blah
	blah
End Select

Theres a million ways to do this. So I don't know what the best way would be.