Rollout windows
I fixed the rollout windows on my shop van by drilling several small holes near the bottom on the sides and running a #8 bolt through With just the screw head showing on the outside and a nut and lock washer on the inside, it was easy to do some paint touch up. As heavy as those windows are, it would probably be a good idea to use two bolts on each side, with the bottom one about three inches from the bottom edge and the next one about six inches above that. Then it's not depending on the crimp into the dried out or dry rotted wood. JM2C