To provide a partition capable of easily changing the height dimension or the number of zones.

The partition includes two partition members 2, 3, and each partition member 2, 3 includes a plurality of vertical partition plates 5 and a plurality of horizontal partition plates 6 which are upright. The vertical partition plate 5 includes first recessed cutouts 7, 8 which form a void with a side surface of the horizontal partition plate 6 at an intersection with the horizontal partition plate 6. The horizontal partition plate 6 or the vertical partition plate 5 of the other partition member 3 are fittable to the first cutouts 7, 8 of one partition member 2. The horizontal partition plate 6 includes recessed second cutouts 9, 10 which form a void with a side surface of the vertical partition plate 5 at an intersection with the vertical partition plate 5. The vertical partition plate 5 or the horizontal partition plate 6 of the other partition member 3 are fittable to the second cutouts 9, 10 of one partition member 2.