PURPOSE: To facilitate opening/closing and fitting/detaching of a grille such as a hanging show case having a machine room on the upper part.

CONSTITUTION: Pins 31 are projectingly provided on the upper parts of the side walls of both ends of a grille 30, and a latch is mounted on the back side of the lower part of the right side. Holders 32 are fitted to holder fitting holes formed on holder fitting plates 38, 39 of angles 26a, 26c in response to the pins 31, on a main body 20 side. When the grille 30 is fitted to the main body 20 side, the grille 30 is grasped so as to be in the horizontal direction, and inserted so as to conform the holders 32 on the main body 20 side to the pins 31 of the grille 30, and hence the pins 31 are fitted in the holders 32 and supported with them. When the grille 30 is open, a handle 35 is pulled in the front direction so as to open upward centering around the holders 32 as supporting points.