The tapered out single wall is finally ready and available to order. 
The new wall tapers out to the bottom, has 50mm Velcro to connect to the awning. At 50mm the connection is very strong and wind is unlikely to detach it. 
4 x walls will make a full kit for the 270 Extreme and connects to each other via 50mm Velcro 
The measurements are outlined in a Photo…
3 x Walls for a full kit on the 180 Extreme