| 摘要 |
PROBLEM TO BE SOLVED: To provide an inner window capable of being easily retrofitted to an indoor side of an existing window without reference to depth-direction dimensions of an existing opening.SOLUTION: An inner window frame 12 is attached to a casing 5 of an existing outer window 2 via a spacer 6. An inner window face material 13 is supported by the inner window frame 12. A clearance D is closed with cover members 7A and 7B. The cover members 7A and 7B comprise a covering piece part 71 for covering the indoor side of the clearance D, and an attachment piece part 72 that is attached to the casing 5 by a fixture 70. An insertion hole 14A for attachment of the fixture, which is used to attach the attachment piece part 72 to the casing 5 by the fixture 70, is formed in the inner window frame 12. |
