To the top screen, nickel, for the bottom one by cons I had a little more trouble and two dust came a bit spoil the result at the edges (not a problem at all, does not show when I use the console). The small cloth comes with, I thought he was putting more fiber it took away dust on the screens. The hunting-bubble cardboard, well I've needed to apply the filter and the bottom is correct (I have a single bubble at a dust, but on the edge).
The explanations are clear, even better with the tutorial for maladroit.es like me and installation is simple. You still have to go without haste and proper cleaning of the screens is essential; the result is very satisfying for me.
