We made our own with fabric from Lowe's years ago. We folded the top about 2" and sewed it with the sewing machine. Then ran a line of plastic clothesline through it. Now we just feed it through the awning strap hole on the bottom of the awning. The clotheslines rope keeps it wedged in the hole, and it's easy to pull out if the wind kicks up. Grommets along the bottom allow us to either weigh it down or secure it with some rocks or a stake to keep it in place. It helps keep the RV cooler and aided in our fridge doing better when we camped in Utah at 110° at Coral Pink Dunes.