Mesh under cedar shakes

There was some discussion in the past about a mesh that was placed on top of a solid deck before the felt was layed to help the shakes breath better. I can't seem to find it but am looking for the manufacture as my supplier can not find it.

Thanks in advance Michael>>>

Thanks copperman.

The shakes I wil be using are class B fire treated and I have found when layed on plywood deck as apposed to skip sheathing they don't last nearly as long. What don't you like about the cedar breather?>>>

it's called cedar breather. Don't care for it myself I'd rather use preasure treated shingles then you don't need the breather>>>