in a case in which the fixing bracket 140 is formed of an additional member the fixing bracket 140 may be fixed to the top of the sub cabinet 120 by screws for this the fixing bracket 140 further comprises a plurality of coupling holes 144 formed such that the fixing bracket 140 is coupled to the sub cabinet 120 the fixing bracket 140 includes a location part 142 in which the leg head 112 a is located and connection parts 146 configured to be connected to the fastening parts 166 of the leg bracket 160 the location part 142 defines a space in which the leg head 112 a of the cabinet 110 is located specifically as shown in fig4 the location part 142 is provided with a depression 143 having a shape and size corresponding to those of the leg head 112 a consequently when the cabinet 110 and the sub cabinet 120 are coupled to each other the leg head 112 a of the cabinet 110 is located in the depression 143 defined in the location part 142 also the depression 143 is formed with a shape and size corresponding to those of the leg 112 and therefore the movement of the leg 112 of the cabinet 110.