The ONA Storm is ideal for larger facilities such as schools, gymnasiums and office buildings. The ONA Storm, with its adjustable airflow control, evenly distributes ONA for areas up to 10,000 square feet (1,100 square meters). The ONA Storm is specifically designed to be used with ONA Gel 5 gallon size. 225 CFM. The ONA Storm is very practical as it can be set anywhere and has very low power requirements - maxing out at 90 watts.