| 摘要 |
PROBLEM TO BE SOLVED: To provide a double sash enabling the easy cleaning of a sill and having excellent draining property of condensed water produced on the indoor side of a screen. SOLUTION: This double sash comprises an outer sash frame 1 and an inner sash frame 2. The outer sash frame is so formed that a drain route 5 for guiding the condensed water produced on the indoor side of outer sash screens 4a, 4b outdoors is formed in an outer sash sill 3. The inner sash frame has a sash sill 6 having a generally flat upper surface. The inner sash sill has screen running guide grooves 7a, 7b. A draining part 8 is fitted to the longitudinal end of the inner sash sill. The draining part has a drain part side draining route 9 extending from the screen running guide grooves to the drain route of the outer sash sill. COPYRIGHT: (C)2008,JPO&INPIT
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