回複：謝謝。您的建議是自己裝，然後讓房東報銷費用。而不是自己把費用從房租裏扣出來。

 home depot in my location do not sell現成的紗窗，because make 紗窗 is so easy for most people. easier than fix a flat tire of bicycle. a little bit difficult than wrap a a gift box. 
First, you need to decide the screen to be outside of your current window or insides --- depend on the open direction of you current window, then measure the inner-size of window frame. 
If you do not have a saw, ask  home depot staff to cut screen-frames for you when you buy them.