>>46773044This is the 3x3 binder I bought after Amazon sent me the wrong thing, it doesn’t open flat unless you force it down or there is enough weight on the left side of the cover, I think the three thick lines on the inside part of the spine are meant to make it stiffer which is why it doesn’t open flat, the 3x4 binder doesn’t have these lines on the inside part of the spine and that one opens flat
