We have windows that tilt and turn. Tilting windows are awesome because they can be opened just a little to let some air in and it is "held open" by gravity and

We have windows that tilt and turn. Tilting windows are awesome because they can be opened just a little to let some air in and it is "held open" by gravity and a latch. So the window has one more "degree of freedom", making window units unpractical.