The ProVac 30 Gallon Concrete Vacuum is great for recovering concrete slurry when a 15 gallon is just too small and a 55 gallon is too big. The vacuum has a sturdy powder coated steel cart with 10” pneumatic wheels for rolling across rough terrain on jobsites. This vacuum comes equipped with a filter bag for wet slurry recovery but can also be used for dry recovery with the proper filters (4049 coated bag, 4031 filter protector, 4013 disposable paper bag).