A dryer includes a cabinet, a drum rotatably provided in the cabinet, a duct that defines a flow passage for air exiting the drum, and a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum. The cylindrical member includes engaging lugs and insertion areas which are alternately arranged along the circumference at one end of the cylindrical member; grooves formed behind the engaging lugs; and recesses formed behind the grooves. A field is compared to the network address.