On the Paper Size Name page, enter a name for the paper size. In the list of existing standard paper sizes, select a paper size on which to base the custom paper size you are creating.
The new paper size is a user-defined size, not a standard size.
In the Custom Paper Size wizard, make changes to the paper size, printable area, custom paper size name, and source. Click Finish to exit the Custom Paper Size wizard.
Solution To create a long plot or plot to non-standard paper sizes, you have to create a custom paper size in the application or in Windowsdepending on the printer driver you have selected. Not every AutoCAD drawing fits in the box of our standard paper sizes, making custom paper sizes a necessity.
Print drawing with custom size — Manufacturing DevBlog It demonstrates how to print a drawing with custom size, x27; Change the paper size to a custom size.