12Inch Kitchen Exhaust Fan reduces the cooking emission in two ways by removing emissions directly at the stove before they mix into the surrounding air and by increasing overall air exchange in the home to remove pollutants from the indoor environment. 12Inch Kitchen Exhaust Fan is used to pull excess moisture and unwanted odours out of a particular room or area. These are commonly found in bathrooms and kitchens, where moisture can build up due to activities such as showering, washing, or cooking.