This piece is attached to the power nozzle on select Royal metal upright vacuums.
It is referred to as a nozzle guard and it is 14 inches wide.
Replacement for Royal vacuum part 1672270000 (1-672270-000)
Royal Power Cast upright vacuum models RY9000, RY9100 and RY9200
Royal EverLast RY8100, RY8200, RY8300, RY8400, RY8500, RY8600, UR38100, UR38200 and UR38300
Royal upright metal vacuum models:1018Z, 1025, 1028, 1028Z, 1030Z, 1038Z, 1058Z, 1059Z, 089000, CR5128Z, CR5130Z
Royal Commercial Lite RY5000 and RY52000
Royal Quick Rewind UR30080