The Ona Odor Stop is an excellent dispenser fan for medium duty application. It has a high volume of airflow combined with a profile that can be conveniently placed anywhere. The Odor Stop features a variable speed fan to distribute ONA Gel up to a maximum airflow of 225 cubic feet per minute (CFM). It provides distribution for a room up to 10,000 sq. ft. It is designed for the 1 gallon Ona Gel container, which will last for 4-6 weeks.