The Shop-Vac Hang Up 5-Gallon Disposable Filter Bag is available in packs of 3 and is designed to fit the Hang Up model of Shop-Vac vacuums. These bags are specially engineered for dry pickup, with a special filter lining that protects the motor of the vacuum from clogging dust and debris. Drywall, cement dust, and cold ash can be suctioned and stored for quick disposal.