We just bought this and installed yesterday. To my huge dismay, the right side accordion panel does not sit flush at the right top of the unit. There is a gap and it is brand new. Also, we have Harvey vinyl windows and this unit does not sit flush on the sill. We needed to stuff the foam insulation under the unit- about a foot of gap. The unit seems to work fine upon turning on to test, but I am not happy with the quality so far.