I have a 48 by 36 inch poster in Pages. I can see size in Page Setup. The print people want the poster as a pdf so I export it to pdf.
When I open the pdf in Adobe, and look at Page Setup, it tells me that the page size is 8.5 by 11 inches.
I can't afford to make any mistakes in the printing. How can I make sure the pdf I send to the printer is the correct size?