The BNR-1837 drywall sander is designed for sanding walls and ceilings made of drywall or plaster in any position. With the built in extensions you can change the length of the drywall sander from 4 ft. to 7.2 ft. long. The removable brush segment allows sanding right up to the edge. With the center and edge vacuum locations a large area of dust collection is provided and can be hooked up to a standard vacuum hose. This Drywall Sander can be folded in half to fit into a carrying case. Can also be used to remove stucco ceilings.