To replace and display an arbitrary design according to atmosphere of a room by a method wherein a plurality of removable fit-in frames are arranged at an inner frame arranged at a part of the partition of a room, and the fit-in frame is arbitrarily replaced for mounting.

In a partition body, such as a partition tool and a sliding partition 1 used in a room, an inner frame 4 having upper and lower grooves 7 and 9 formed in an upper and a lower part is arranged in an outer frame 3 in addition to a sliding partition part 2. A fit-in frame 5 having an arbitrary design comprised by a gauge 10 and a pattern 11 is prepared. A top part 6 thereof is inserted in the upper groove 7 of the inner frame 4 and a bottom 7 is fitted in the lower groove 9 and removably mounted on the inner frame 4. Further, a plurality of kinds of the fit-in frame 5 having the same outside size as each other and different designs are prepared and replaced from each other for use. This constitution arbitrarily displays fine arts and hobby works and produces nice atmosphere of a room.