A "wiley" in the open position. Actually there are triangle shaped pieces that hold the lexan open or closed, just not installed in these photos. The plastic can also be removed to have full open. In this position, it can be raining like crazy and it doesn't matter, as it just runs right back out. Window base is angled both down and to center then fully covered with about 1/8" epoxy. This flows all water out to the drain in the lower center of the opening.