The first set of two I purchased (108" long) were 102" on one side and 106" on the other side of one panel and the second panel was 106" on one side and 108" on the other.  I took a picture of this huge discrepancy and sent it to Wayfair.  The customer service was amazing.  They immediately sent out replacement and told me to donate the original two panels.  The replacement is also a little off - about 1" difference between the sides, but it's a lot less visible.  They are wonderful at blocking out the light.  They are truly blackout in this chocolate brown color.