The DustBoss DB-45 from Dust Control Technology is a mid-sized unit for indoor and outdoor use. The DB-45 can cover 12,000 sq. ft. from a single location. The DB-45 has Variable particle Sizing technology with a wide selection of different nozzles for suppressing a broad range of particle sizes. The DB-45 also has a 15-hp fan that generates 18,000 cfm.