both sides, 15" . both about 1" or so wide. Any Regal from '81-'87. Maybe hit in the rear or rusted , but not rusted in this area. The stock car guys throw these away but I never see them in time. This is in front of the rear tire. And yes, i know it was a dumb a$$ thing to cut. Was done many years ago to fit a huge tire for my stagell. By the way, the wheel well moldings do hide it.