The small DUETT window lamp is an easily recognisable classic, with its stack of colourful, funnel-shaped shades. It was designed by the Dane, Bent Gantzel-Boysen, who for example had designed several lamps for Danish company Louis Poulsen.
The lamp had six shades and was sold in various colours, including orange, green, blue and full white. The gradation of colour from light to dark in the same lamp was one of its special features.
DUETT was launched in the 1983 IKEA catalogue, and remained until the 1987 edition.