OMNIAIRE OA600V HEPA negative air machineis a very compact and powerful unit featuring variable speed and light weight. The OA600V can be used with an optional UV germicidal irradiation module and/or carbon filter for unmatched air purification. Airflow - 150-600 cfm Dimensions 14" W 18.5" H 30.5" L Weight - 55 lbsAir Flow Calculator (link)