Create Custom Paper Sizes
Go the file menu and select Page Setup.
Make sure the “Format for:” is set to Any printer. Alternatively you could select the printer you use for printing materials but why?
Click on the Paper Size drop-down menu, and select Manage Custom Sizes.
In the Custom Paper Sizes window, click the + sign to create a new custom paper size. It will create a new paper size labeled “Untitled”. Make sure “Untitled” is selected from the left hand menu and enter the approximate width and height of your paper. Leave the “Non-Printable Area” set to “User Defined”.
In the left hand list, rename the paper size by double clicking “Untitled” and the text will become editable. Name it something that describes the page size, like the dimensions, i.e. 6.5 x 9.375.
Create all paper sizes that are needed, Click OK to save.
Select and Print on Custom Paper Sizes
Go the file menu and select Page Setup.
Click on the Paper Size drop-down menu, the custom pages will be near the bottom. Select your Custom Page Size and click OK
Next you will want to Print, go to File Menu > Print or
Make sure that “Ignore Scaling and Shrink to Fit Page Width” is checked
Select the correct printer, and click Print.