a plurality of bristles secured to the inner surface of the inner wall, the plurality of bristles tapering towards a center portion of the inner wall, {HEAD ~ the plurality} of bristles serving to remove {TAIL ~ dust particles} from the ceiling fan; and 
a plurality of bristles secured to the inner surface of the inner wall , the plurality of bristles tapering towards a center portion of the inner wall , { HEAD ~ the plurality } of bristles serving to remove { TAIL ~ dust particles } from the ceiling fan ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH