Usha International Limited offers Exhaust Fans with Heavy Duty Motor. Usha International Limited is certified ISO 9001:2000 for its marketing practices. The model name of Exhaust Fans with Heavy duty motor is Turbo Heavy Duty. Featuring aluminum die-cast body, these Exhaust Fans have heavy duty motor. Exhaust Fans with Heavy duty motor are available in 300/380/450mm sweep in 900 and 1400 RPM and 600mm sweep in 700 and 900 RPM.