It's a bit hard to see, so I chose it from the "loot menu", so it would highlight it.   I have a crate built inside the house, directly to the NW of the window. I also have a crate outside house, that is 1 spot south of the first crate, so that the two pictures overlap.   It lets me walk through the crate that is inside the house. (No collision)   Edit - the second picture is much easier to see, after I turned on the lights.