SSRS - Printing on Fot Matrix, Portrait

[CPiO]

Hi,

We are trying to print an SSRS report in Portrait to a Dot Matrix printer
which has American Fan Fold paper, my issue is as follows:-

SSRS seems to work out if a report should be printed in portrait or
landscape by the page height vs width. e.g If the page width is less than
page height, SSRS assumes Portrait.

This is fine for A4 lasers, but not American fan fold where the page width
is 14.5" but height is only 11inches.

How can we tell SSRS to use Portrait when the page width is 14.5" and the
page height is 11inches?

Thanks in advance...