Option to export to standard 8.5" x 11" instead of only A4 paper

Recently went to export my boords only to realize that the option for standard export is A4 European paper size. In the US standard paper size is 8.5 x 11 inches. PLEASE add an option for that! I had to reformat all of my boards in Ai after I exported to fit within the company’s branding template. Pretty annoying. Otherwise, I love Boords!