Open the wallet is 8.5" long (approx 215mm), excluding the little flap, x 3.5" wide (approx 90mm)
As I mentioned earlier if you set you SCAL font to 11.5 it will import into SCAl at the correct size.
Hope that helps.
I got those measurements straight off the SVG. I tend to design every thing at 1:1 (full size)
I am having trouble figuring out why people are asking for the dimensions. Am I missing something? I am only a bloke after all

Is there something I can improve when submitting designs in the future?
I am always up for suggestions?
Cheers
Craig