摘要 |
<p>The device (1) has a material strip made of metal sheet and provided with a main section, and a flap fixing section (6) bent from an end of the main section. A lattice fixing section (5) is bent from another end of the main section and provided with a securing slot. A lattice element securing section runs angular to a lattice element guide section. The main section has two sections (3, 4) arranged under an angle. The lattice element securing section extends from both side of the guide section. The lattice fixing section with the main section forms an angle of 90 degree.</p> |