Currently Being ModeratedMar 18, 2013 9:13 AM (in response to tmonahan5)
Each template is a specific size. You can use it for a different size envelope only if you change the paper size and reposition the content before printing.
Currently Being ModeratedMar 18, 2013 11:16 AM (in response to tmonahan5)
Menu > File > Page Setup… > Paper Size: Choose or create a different size
You will need to adjust the layout in the envelope template to suit.
Currently Being ModeratedMar 18, 2013 11:47 PM (in response to tmonahan5)
I don't print envelopes very often, but when I do, I use a pair of templates whose page size is US Letter. All that's necessary is to place the text to be printed into text boxes located the correct distance from the top and left of the page/envelope.
Pages will issue a page feed after printing the last line, and that will eject the envelope, even though it's far shorter than a letter size page.
Some day, I'll set up a template using No.10 Envlope as the page size, but until then the described setup works for me.