Oki MB472dn User Manual page 184

4.
Double-click [Untitled], and then enter a name of the custom paper size.
5.
Enter values in [Width] and [Height].
6.
Click [OK].
The created paper is displayed at the bottom of the [Paper Size] list on the [Page Setup] panel.
7.
Click [OK] to close [Page Setup].
8.
Select [Print] from the [File] menu.
9.
Change other settings if necessary, and then click [Print].
Printing starts.
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