| 摘要 |
A security door or window comprises a security panel ( 10 ) [typically a metal grid] which is held in a peripheral frame ( 15 ) in an improved manner and without requiring rivets or welding by providing a recess ( 16 ) in the edge of the panel and a rib ( 18 ) in the peripheral frame which passes into the recess to hold the parts together. When the security door/window is assembled, the panel is trapped and cannot slide out of engagement with the frame.
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