Because of the length of a corner/radius staple template, the printable PDF can’t be printed on a single page. It’s easy to make a template, grab a ruler and a piece of flexible cardboard or card stock and use the recommended measurements below.
(Remember, you want your template to be somewhat flexible, so it can bend in the middle.)
Width: 13 and 5/8th inches.
Height: 2 and a half inches.