Does someone know what sort of mesh Kelty uses for the back panels on their external frame packs?

I think its Leno mesh but I don't know if its stiff or soft Leno. I'm making a DIY external frame, hopefully lightweight, backpack and I'm working on the design of the back panel. I don't need much so ordering samples costs as much as ordering both types.

Kelty sells a replacement back panel and I bought one but it won't work for me unfortunately because it won't fit and can't be modified to fit. I like the mesh though...