The Duplex was a Canadian automobile built by the United Iron Works Company, of Montreal in 1923.
[1] The engine was an unconventional 4-cylinder two-stroke engine with two pistons per cylinder, which the makers claimed gave excellent fuel economy.
[1] The Duplex had a 110-inch (2.8 m) wheelbase, and the proposed tourer was priced at CA$1750.
[2] The prototype was displayed at the 1923 Montreal Show, but there was very little interest shown, and production never eventuated.
This article about classic and vintage automobiles produced between 1915 and 1930 is a stub.