| 摘要 |
The invention consists of a casement 1 which becomes a frame and has channels 2 to which are attached casement beads 6, one on the upper, horizontal part of the casement 1 and two at its vertical extremes. The opening leaf 7 has water drip outlets 11 whose vertical projections are on the outside of the casement 1, with the result that the water emerges directly on the outside of the casement without the need for water drain holes in it. |
