for a stationary enclosure each of the walls and doors of the enclosure comprises a tubular steel frame and a heavy wire mesh which is welded to the frame in the preferred embodiment the round frame tubing is 1 u00bc u2033 11 gauge and the wire mesh is made of 1 u2033 16 gauge wire the base frame square tube is 1 u00bc u2033 16 gauge steel with 1 u2033 u00d7 4 u2033 reinforced steel rod referring to fig2 two shelves 38 are shown the shelves may also be made of heavy wire mesh or may be made of other materials such as wood as further shown in fig2 the top wall 12 is hingedly connected to the back wall by means of two hinges 36 these hinges may be loops at the ends of two wire members of the top wall wire mesh while each of the walls of the enclosure are made of a wire mesh material it should be understood that any one or more of these walls may be constructed of a solid material such as for instance sheet steel material or wood however for ease in conducting a visual inventory of the contents of the enclosure it is preferable that the walls are made of.