Firefighters were called out after flames were reported at a storage unit facility near the Fulton County Airport on Monday evening.
The call was answered around 9:30pm by crews from Wauseon, Archbold, Delta, and Lyons at the facility on Dunbar Drive.
The fire had already involved about 75 percent of the building by the time crews arrived, and affected about 30 of the units.
According to investigators from the State Fire Marshal’s office, who are still investigating it, the structure was a total loss.