The Universal Paper Size is a user-defined setting that lets you print on paper sizes that are not preset in the printer menus. Set the Paper Size for the specified tray to Universal when the size you want is not available from the Paper Size menu. Then, specify all of the following Universal size settings for your paper:
Units of Measure
Portrait Width
Portrait Height
Notes:
From the home screen, navigate to:
> Paper Menu > Universal Setup > Units of Measure > select unit of measure > Portrait Width or Portrait Height > select width or height >