Aircraft Spruce sells templates of all kinds for this. That's where I got mine years ago. Send them the tail number and they'll produce as a unit in the size, style you select.
Chris
Does anyone know a source for templates so i can spray paint simple 12" N numbers? Thanks!
Jae
My plane is still unpainted, so i am looking to spray paint on the 12" numbers temporarily for a possible Mexico trip. Then I will wipe it off with acetone when the trip is over.