| 摘要 |
An improved security window cover having a peripheral frame structure and a security shielding door or cover hingedly attached to the frame. The frame has walls which conform to the interior building wall adjacent the window and walls which conform to the shape, contour and dimensions of the inner circumferential edge of the wall opening in which the window is installed. The inner circumferential walls of the frame have partial rigid joints joining them to one another which create a degree of flexibility for fit and installation. The shielding door preferably has a lip or ridge on the outside which is medial and parallel to the edges of the door which serves to strengthen the door, protect the frame installation means and act as a guide and support for insulation.
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