Thor Industries is a recreation vehicle builder that makes and sells a range of RVs, from motor homes to travel trailers, as well as related parts. Brands include Airstream and Dutchmen. RV manufacturing plants generally produce vehicles to dealer order; Thor's independent dealers dot the US and Canada catering to private purchasers and municipalities. The company has domestic facilities in Idaho, Indiana, Michigan, Ohio, and Oregon. The US is its largest market, accounting for 90% of total sales. Thor rolled out in 1980 when Wade Thompson and Peter Orthwein purchased Airstream's business.