Oscillating fans are used to move air around the grow room, ensuring that cool, fresh air is able to reach the plants. Since oscillating fans rotate, they are more effective than stationary fans at reaching all areas of the room. They are available as wall mount or on stands, and often feature a variety of speeds as well as the option to be lock in place, and not oscillate. These fans are also useful for gently stressing the plants, providing a subtle pressure that helps to strengthen the stems.