Crompton greaves, a part of the avantha group,and a conglomerate with the global footprint offers air curtain. The crompton greaves air curtain is particularly effective in air-conditioned areas, preventing warm air from entering and cold air from wastefully flowing out. The color of casting is ivory and color of grill is brown. Air curtain 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: