Currently we don't have custom paper sizes for Newsletter Templates. One workaround is to use the current file and make any changes you need. Once you're done, save it as a PDF, and then print the PDF on your Tabloid 11x17 printer and scale the content to fit the page.
The added benefit is you don't have to try and scale all the content, as it will do that for you when printing. That works for any Word document you're using that isn't as big as you'd like :)
I am absolutely thrilled to have found this site. My colleagues and I use the resources daily. I would be lost without it! Congratulations on building a site that just keeps on giving!
Jane Barwick Day Service Supervisor United Kingdom