Crompton greaves, a part of the avantha group,and a conglomerate with the global footprint offers clean flow. Clean flow fans are available in two sizes; 9 " & 12" and their sweep being 1400rpm and 1250rpm respectively. It is fitted with 2 sleeve bearings for smooth operation and with bird guard for safety. Colors available for these fans are silver grey and brown. Clean flow 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.