It’s important to distinguish between page size (as defined in the source application’s Document Setup dialog box for your document) and paper size (the sheet of paper, piece of film, or area of the printing plate you’ll print on). Your page size might be U.S. Letter (8-1/2-by-11 inches or 21.59-by-27.94 cm), but you might need to print on a larger piece of paper or film to accommodate any printer’s marks or the bleed area. To ensure that your document prints as expected, set up your page size in both the source application and the printer.
The list of paper sizes available to Acrobat comes from the PPD file (PostScript printers) or from the printer driver (non PostScript printers). If the printer and PPD file you’ve chosen for PostScript printing support custom paper sizes, you see a Custom option in the Paper Size menu. For printers capable of producing very large print areas, Acrobat supports pages as large as 15,000,000 inches (38,100,000cm) by 15,000,000 inches (38,100,000cm).
Create a custom page size (Windows)Open the Printers or Printer And Faxes window from the Start menu. Right-click the Adobe PDF printer, and choose Printing Preferences.
In an authoring application such as Adobe InDesign, choose File > Print. Select Adobe PDF as the printer, and click the Properties button. (In some applications, you may need to click Setup in the Print dialog box to access the list of printers, and then click Properties or Preferences to customize the Adobe PDF settings.)
Create a custom page size (Mac
OS)
Use the custom page size