In case you're here trying to figure out some more dollhouse tips, I've posted another video. I hope it helps. It describes how I mounted the elevator and it's dimensions. I also mention another way to mount the elevator. I quickly describe how we cut in the windows, which is the same basic way we cut the door and stair opening out. I'd offer to rebuild this for you to better show how to do it, but I'm currently working on my own (BIG) projects and am a bit overwhelmed. Here's the link to that video, I hope it is of some help: