I'm glad that I bought the inserts for 1 room, but I won't use them for the whole house. The video shows they should be inserted from the bottom up, but I found it far easier to insert from the top down. After installing the 2 I decided that I would definitely not install them for the whole house for 2 reasons. The initial install is far more difficult than your video makes it look & I would only use for more windows if Indow installed them. The other reason is that you recommend they be taken out and reinstalled annually and that is not going to happen. If you had a representative who would do the install and then come once a year to take down and reinstall I would consider using for all windows.