This fan can move 46 cubic feet (WxHxD) of air per minute (CFM) which is good for 1-2 components (up to 10 cubic feet of space with 1 shelf), this is just a general rule of thumb and it assumes you have adequate space for air to flow in from, and ventilation between shelving, we're currently working on an in depth guide to airflow and cooling however in the mean time if you have questions we're here to help you!