Abstract Topic The drag flask surface of the sash for the outside is formed to abbreviation flat,It is in the drag flask structure of the double sliding door, summoning/consuming combination of the drag flask of the double sliding doorFrom it stabilizes vis-a-vis the rainwater which accompanies the wind pressure in the wa se section,It is, offer of the drag flask structure where you can obtain dead water characteristic is designated as purpose. SolutionsFrom drag flask based component plural stand rising pieces facilitiesThe ke te and the surface component which the shoji slides to the top are taken, attachingThe ke or sticking, to form the drag flask surface to abbreviation flat, in the drag flaskIt is formed over into the space which was formed and inside and outside the roomWhile becoming, in the summoning/consuming containing se section of the space for the shoji drag flask spatial dead water burotsuInstalling ku and drag flask concave section dead water block, inside and outside the room the dividerThe tsu it is.
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