Thanks for the good information! I am repackaging the TVs so they will withstand the trip. The TVs will be used in the south (110v/127v area). They are not PAL-M but we will be using them with external HDTV receivers, so that is not a problem. The cost of the TVs is around $300 each, so that is well under the $500 per person duty-free limit ($1000 combined) of taking merchandise into Brazil. Plus, my wife is Brazilian and she will have no problem talking with customs if there is any question. I like the spray foam idea.