This 15-foot panel is designed to attach to a 10-foot side of any Caravan canopy that has a wall of that length. It attaches easily with Velcro straps and includes two 20 in. windows that also attach via Velcro. Once in place, this useful protective element allows for breathability and air flow, but reduces the effect of wind under the tent and virtually eliminates bugs entering the covered area. That's particularly useful for people who use shelters in areas where mosquitoes are particularly obtrusive, where food needs to be protected underneath the canopy, or simply where celebrants want visibility, but don't want unabated wind or insects entering the tent.
So there are a ton of potential uses. Some of those uses (like keeping bugs out without spending your outdoor afternoon in a cocoon) are really common. You may have a potential application in mind that hasn't even been discussed, as many owners do. Whether you have a common problem or a specific use designated for the panel though, you'll probably agree with many other satisfied owners that the Caravan 10 ft. Mesh Sidewall with Windows is a welcome addition in almost any outdoor setting.