| 摘要 |
The security window has movable airtight window element (6a,6b) arranged opposite to fixed window elements (2,4a,4b) such that air-tight closure of window main portion are covered at preset position. The movable window element is exposed for releasing the fixed window element at specific position. The frame profile (8) is provided such that movable window element is located parallel along the fixed window elements and both movable and fixed window elements are constructed pivotably. |
