In the case that there are doors inside and outside the Westinghouse of the quadrangle, it is necessary to comprehensively consider the opening and closing direction and spatial layout of the doors before installing cotton curtains. You can refer to the following suggestions:

Measuring the size of the door opening: Before installing the door curtain, it is necessary to measure the size of the door, including the total width and height of the inner and outer doors and the size of the door frame.

Choose the right curtain material: according to the need, choose the cotton curtain material with moderate thickness and reliable quality to ensure the good thermal insulation and sound insulation effect of the curtain.

Determine the installation method: due to the different directions of the inner and outer doors, we can consider installing the cotton curtain on the outside, but not the inner door. If the inner side door also needs curtains, you can consider using folding curtains or roller blinds.

Installation of curtain track: install the track above the door opening, and use special curtain track groove to ensure the stability of the track. Hang the cotton curtain on the track and adjust the position to ensure that the curtain is flat and beautiful.

Adjust the opening and closing direction of the door leaf: adjust the opening and closing direction of the inner and outer doors as needed to ensure that the doors will not conflict or get stuck with the door curtain during use.

In short, when installing cotton curtains, we should comprehensively consider the opening and closing direction, size and spatial layout of the door, and choose the appropriate installation methods and materials to ensure the good use effect of the curtains. If you encounter specific operational problems, it is recommended to consult professionals or manufacturers.