I know that back in the 40's and 50's that Hollywood stars did spend the big bucks and had their systems made by the famous Max Factor who also was a make-up manufacturer. His clientel included Humphrey Bogart, Bing Crosby, John Wayne, George Burns---all the biggies back then. But even then I'll bet that Max Factor sent them to some place over seas to be made. Venting a unit is an extremely tedious and time intensive process. I laugh when I see Richard Farrell state in his ads that he 'trains the ventilators himself.'