The answer is yes. Currently, broken bridge aluminum windows basically need to be installed with sub-frames. 70 series the Broken Bridge aluminum window needs a sub-frame.
Broken Bridge aluminum the purpose of installing the auxiliary frame of the window is to make the irregular door and window openings become standard rectangular. This is well understood. The window openings reserved in the building cannot be standard, which results in that the customized doors and windows are not regular rectangles, the four corners are not right angles, and the window frame is not strong, easily deformed.
The Broken Bridge aluminum window uses a sub-frame, which perfectly solves the above problems. The corrected window opening becomes a standard square.
With secondary frame broken bridge aluminum doors and windows, to ensure that the customized window is more beautiful and stronger, without deformation.
