Sets or returns an int that represents the page height for this section in twips. One twip = (1/20 pt) or (1/1440 in)

public int PageHeight{ get; set; }
<p>Public Property PageHeight() As Integer</p>

Page height may not be smaller than .1" (144 twips) or larger than 22" (31680 twips). Values beyond these will be automatically adjusted.

MS Word equivalent: File menu > Page Setup... > Paper tab > Paper size: section > Height: -- (Make sure Apply to: This section is selected)

          //--- Return PageHeight
          int pageHeight = oSection.PageHeight;

          //--- Set PageHeight to 11 inches
          oSection.PageHeight = 15840;
        
          '--- Return PageHeight
          Dim pageHeight As Integer = oSection.PageHeight

          '--- Set PageHeight to 11 inches
          oSection.PageHeight = 15840