Sets paper size.
Excel does not use the paper size setting from printer driver. If you need to change the paper size, use this property instead. Do not use PRN_MSO_PAPER_CUSTOM since it is not supported by ExcelPrintJob object.
Set oPrinter = CreateObject("easyPDF.Printer.5")
Set oPrintJob = oPrinter.ExcelPrintJob
oPrintJob.PaperSize = PRN_MSO_PAPER_A4
oPrintJob.PrintOut "C:\input.xls", "C:\output.pdf"