Hay - Stacking chair X-Line - White - Perforated steel sheet - Designer Niels Jørgen Haugesen; Hay Stacking chair White Metal. Dimensions: W 50 x D 45.5 x H 77.5 cm - Seat: H 45.5 cm. A master of Danish design, Niels Jørgen Haugesen (1936 - 2013) has twice been awarded the prestigious ID Prize, one of Denmark's most important honors. He was also awarded the Danish Design Prize - Möbelprisen - in 1996, and his creations are exhibited in art and design museums worldwide. Haugesen is best known for his X-Line stacking chair, which he designed in 1977. Named after its X-shaped load-bearing st