The Universal paper size is a user‑defined setting that lets you print on paper sizes that are not preset in the printer menus.
From the printer control panel, navigate to:
> Settings > > Paper Menu > > Universal Setup > > Units of Measure > > select a unit of measure >
Press the up or down arrow button until Portrait Height or Portrait Width appears, and then press .
Enter the preferred settings using the keypad or press the left or right arrow button to manually select the size you want, and then press .