He had two brothers, Pentti and Esko Mannermaa. Interior architect, SIO / Institute for Applied Arts (now University of Art and Design Helsinki), Helsinki, Finland 1949 1978 "Muoto-Form" exhibition, Kunsthalle Helsinki Entered designs at three Milan Triennales Kilta chair (Martela), MoMa, New York, United States of America (the Kilta chair has also been included in numerous exhibitions around the world) 1989 Finnish Association of Interior Architects SIO honorary member.
1989 Finnish Association of Interior Architects SIO honorary member 1985 Central Chamber Of Commerce gold medal 1979 Knight of the Order of the White Rose 1977 State Applied Arts Commission"s award 1955 Gold medal at the Finnish general fair for the Kilta chair 1960-1971 Teacher of construction drawing at the Institute for Applied Arts (now University Of Art And Design Helsinki).