| 摘要 |
A door security system serves to substantially improve the reliability of the entire door assembly. The system comprises components generally having an L-shaped cross section. One of the components may be mounted around a vertical jamb member on the side of the door jamb corresponding to the door slab free swinging edge. Similarly one or more components may also be mounted on a vertical jamb member on the hinge side of the door jamb. The components include sleeves that wraps on two sides around the vertical jamb member to reinforce and stabilize the door system.
|
