From the Tools menu, select Envelopes and Labels and go to the Labels tab
and select a label that has two rows and two columns to the sheet.  Then
click on New Document and a document will appear that contains a two row,
two column table with fixed cell dimensions (that is all labels are).  If
you don't see it, select Show Gridlines from the Tables menu.

Alternatively, just insert a two row, two column table into a document and
size the rows so that only two of them fit on the page.