| 摘要 |
The window frame, which can be fixed or sliding and made from wood, metal or plastic, has an inner glazed pivoting section (1) with uprights (2) and cross-members (8), mounted on central top and bottom pivots (9) inside an outer frame (7) so it can be rotated for cleaning the outer surface. The inner frame is fixed to the outer one in the closed position by a system of catches and catch plates (15) in the uprights. The frames can be sealed relative to one another by brush joints. |
