To vary a height and a width according to various requests by assembling partitions so as to be provided with the three parts of a post, a panel and a shelf.

The post 10 is provided with a T-shaped groove 12 formed on its inner surface. A hole 14 is formed in a center of the top face of the post 10. A cover 16 with a pin at a bottom part is provided on the top face of the post 10 to receive the pin in the hole 14. The panel 20 is provided with an end part to be slidably received in the groove 12 and a tongue part is formed at is bottom part. The groove of the other panel 20 receives the tongue part. The shelf 30 is provided with stair-formed end parts. The width of the bottom part of the stair-formed end parts is a half of the groove of the panel 20. The two stair-formed end parts of two shelves 30 are simultaneously housed in one groove of the panel 20. A shelf packing member 34 is also provided with a stair-formed end part and when only one stair-formed end part of the shelves 30 is received in the groove of the panel 20, this groove is packed.