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Published on May 28, 2011
For our house addition, we used standard window air conditioner units but adapted them so that they could be used in the wall (where they can be left year-round) rather than in the window, which would be awkward with casement windows. To do this, we basically created a "fake" window opening, similar to the type shown above, but with a moveable 2x6 that simulates the behavior of an ordinary double-hung window top sash. This video explains the process, and also shows how we made an insulated removable picture frame to help prevent winter drafts through the opening.