new system of controtelaio for fastening internal doors and windows of civil housing, industrial buildings.

摘要

a major problem is that the building is of the utmost importance of transport and the use of controtelaio for internal doors and windows.therefore, this new utility model, which is removable in its elements, offers the possibility to reduce the execution time, and at the same time, it is more economic than the previousfor the installation work.the fastening is simpler than traditional, given that it will no longer be necessary to break up the masonry to set the zanone, thanks to the spandrel and plates of rigid plastic.