Edited to correct poor eyesight and clumsy fingers on a smart phone
Don, I TORTURED my 20-amp tortilla and it just laughed go outside and look at the power pole transformer. Whether in Regina, Reno, or Raleigh, that transformer is made in Mexico.
If we can work out the details I can pick up a 20-amp model and mail it to you when I go north for medical in February. Place the box INSIDE the coach and feed the AC from the box. It really needs a 20-amp receptacle, and some MOVS & transient voltage diodes soldered inside to make it sneer at one of the conventional RV autoformers.
Mexico, Canada, and Canada are all part of NAFTA so there should be ZERO import duty on this item. Sticker on side clearly says HECHO EN MEXICO.