Crompton greaves, a part of the avantha group,and a conglomerate with the global footprint offers trans`air. This fan are available in different size 6", 9"and 12", their sweep being 150mm, 225mm and 200mm respectively. The speeds of these fans are 1700rpm, 1400rpm and 1380 rpm correspondingly. The colors available are ash grey, black and brown. Trans`air has earned certification of iso 9001:2000 for its quality management, iso 14001: 2004 for environment management and iso 18001:1999 for occupation health and safety assessment series. These fans are applied in various sectors-- the domestic fans catering to households and offices all over india. The major features of these fans are: