We have a set of original prototype electric cutouts by Doug. They have been on the RoadRunner for almost 9 years. Yes, they are larger/beefier and seal better than the smaller butterfly type cutouts. But still seal well with the sliding gate and Dayton reduction motor. We added a support bracket for each to balance its heavier weight. We don't open them often but they are great when pulling up alongside a slammed Escalade who has his subwoofers booming out. They easily override his thumping bass..

Just my $0.02...