The Kodak Duaflex is a 620 roll film pseudo TLR made at the Kodak factories in the US and UK. The original Duaflex I was available from December 1947 - September 1950 in the US, and 1949-1955 in the UK. The Duaflex II was produced from 1950 to 1960 and the Duaflex III produced from 1954 to 1957. The Duaflex IV was introduced in 1955 and was discontinued in the US in March 1960 along with any other iterations still in production.
The Duaflex IV had aluminum alloy trim plus film compartment door with a Bakelite (plastic) body, other chromed plus painted steel parts, and imitation leather (leatherette) covering. The camera was available with either a simple fixed focus 75mm f/15 Kodet lens, or with a 72mm f/8 Kodar triplet lens in a front-element focusing mount. The Kodar lens could focus to 3.5 ft. or 107cm to infinity. The Kodar lens had Waterhouse stops of f/8, 11, and 16. The shutter had settings of "I" (instant) and "B" (bulb), and has a synched plug-in socket for use with a Kodalite Flash holder. Other features are shutter speed of 1/50 of a second when new, waist high viewfinder, a red frame number view window in the back cover, carry strap hard points, a portrait acclimated ¼ inch 20 thread tripod socket, shutter loading when frame advanced, and a shutter loading lever for intentional double exposures located under the shutter release button.