For meeting the daily needs of keeping the office and home spaces odour and smoke-free, the Crompton 450 mm Heavy Duty Exhaust Fan is the best investment. These electrical appliances from the house of Crompton boast a heavy-duty motor and cast aluminium rotor on both the ball bearings. The Crompton EXHD450 4 3 fan has an attractive design with four sharp powerful blades and golden finish shanks. These exhaust fans from Crompton feature a front guard for protection to its users as well as any injury to birds or other living organisms.