PURPOSE: To fit an upper edge of a pane to an upper frame in one process of works without using an aluminum sush frame and to promote work efficiency as well as the reduction of a cost.

CONSTITUTION: An upper edge 13a of a pane 13 is provided along the side of a head 10 of a balustrade wall. A clip piece 21 hooked to interlock with a rising piece 10a of the head 10 is provided to the upper part of a holding hardware 20. A front side piece 22 and a rear side piece 23 are vertically formed in the lower part of the clip piece 21 by slipping them from positions back and forth, and the upper edge section 13a of the glass 13 is held between the front side piece 22 and rear side piece 23 through buffers 24a and 24b.