Importance

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Abstract

A partitioning sash comprises at least one multi window mullion for forming a multiple window portion, at least one salient corner mullion for forming a salient angle portion and at least one reentrant corner mullion for forming a reentrant angle portion. The multi window mullion, the salient corner mullion, and the reentrant corner mullion has the same dimension measured in a direction parallel to a width of the sash. Each of the salient corner mullion and the reentrant corner mullion is constituted of a mullion body and an auxiliary frame body. The mullion body has a glass receptacle groove on a side surface to be located at one side in a direction parallel to the width of the sash, end has recesses on side surfaces to be located at both sides in a direction parallel to the depth of the sash. The auxiliary frame body has a mounting surface to be located at one side in a direction parallel to the depth of the sash, and has a glass receptacle groove formed on a side surface opposite to the mounting surface so as to open in a direction parallel to the depth of the sash. The mounting surface is provided with a pair of engaging pieces. The mullion body and the auxiliary frame body are coupled with each other by selectively engaging the engaging pieces in either one of the recesses so as to form either the salient corner mullion or the reentrant corner mullion.

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First Claim