Set sheet size in Fiery Impose

The default Sheet setting applies to all sheets (signatures) and defines the dimension of the intended imposition layout. Special sheet size assignments can be defined in Media Catalog, Paper Catalog, or Mixed Media in the Job Properties window.

Select the dimensions of a sheet of paper in the Sheet menu.
You can also type the desired size directly into the Sheet option menu.
Click Edit to specify other media settings, such as weight and color mode.
If Media Catalog or Paper Catalog is supported, select Choose from Media Catalog or Choose from Paper Catalog from the Media menu.