The door and window frame is fixed on the wall and is used to install basket of doors and windows. It is generally used for 70 series and below profiles. If the window needs to be covered with window frame (window opening), tiles need to be pasted around the window, when the ceiling is needed at the top of the window, the attached frame needs to be added, because the frame of the 70 series and below profiles is relatively narrow, which will hinder the opening of doors and windows.
The advantage of installing the sub-frame is that there will be gaps on both sides of the doors and windows after installation, which is not very beautiful. However, after adding the sub-frame, all the gaps can be covered, which is equivalent to the dumb mouth of the doors and windows in function, however, additional frames need to be charged separately. Door Industry vision, your friend!
At present, the sub-frame will be basically installed, because the installation of the sub-frame is beneficial to the installation firmness of the window, the protection of finished products, the insulation effect, the installation precision, etc. In the newly-built building, because the size of the door and window opening of the building is not very standard after being completed, after installing the auxiliary frame, the processing size of the door and window can be measured more accurately. The auxiliary frame plays a role in sizing and positioning doors and windows. Generally speaking, large-scale projects require the installation of auxiliary frames, which makes the standardization stronger.
Make up the gap between door & window profile and the wall, which is good for waterproof; Enhance the horizontal and vertical flatness of doors and windows; After the positioning and installation of the auxiliary frame, the size and position of doors and windows are determined, when dealing with the surface structure of the wall, the surface of the doors and windows will not be damaged or scratched, which plays a role in protecting the doors and windows.
It is conducive to the installation of doors and windows and has better operability. It is more conducive to the thermal insulation and sealing performance of doors and windows, especially the expansion phenomenon caused by thermal expansion and contraction of plastic steel doors and windows. Therefore, cracks occur at the edge of doors and windows, which not only affects its overall appearance, but also reduces the functional requirements of anti-seepage, energy saving and compression Deformation. Therefore, in advanced doors and windows, general design and steel auxiliary frame structure are used, it greatly improves the effective performance of doors and windows in these three aspects and improves the safety and comfort of the living environment.
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edit: doors and windows online-Yanzi
