Luxair offer the very best in cooker hoods with external motor units, all our outside motor fans are made from the highest quality stainless steel and will not rust or pit when open to the elements, if correctly installed these designer great looking units they will last for many years, Extraction mode cooker hoods can be fitted with an external motor located on an outside wall, flat roof or on a pitched roof, for example. Installing the motor externally means that it can be located where the noise will cause less disturbance. This reduces the noise at the hood to a minimum. For a significant reduction in noise levels, the ducting system should be at least 3-7 m long. Whether you are able to use an external motor will depend on the layout of the kitchen, the type of ducting and how it is installed and the cooker hood itself.