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