Viking’s new patent-pending pressurized drying system makes drying wall cavities “easier and less frustrating than before.” Perfect for under sinks, behind cabinets and permanent furniture. All-in-one containment allows the operator simple, on-the-go equipment. “Just bore a _-inch hole, plug in the end hose and begin drying,” Also known as a AC8400 Omni-Dry Wall & Cavity Dryer Color is not garanteed.