I got a wide back from a customer that had 108" written on the selvedge. She had washed it. From experience I have learned to measure before I load even though it was a wide back. I was stunned when it only measured 96" selvedge to selvedge. I made sure the selvedge was intact on both sides. This from a well known quilt fabric company. I would not have been surprised to find shrinkage from 108 to 104 after washing but a 12" shrinkage is unbelievable.