The bark is an inset in this vanity. Most insets are wire or glass, but we used bark for added interest. Cabinet insets can be clipped and/or siliconed to the inside lip of the cabinet door. Thanks for your question!

I also love the birch covers. Where did you get them (right out of the woods)? Do you know if they make a rough "feel" wallpaper that looks similar that could be used?
This look is exactly what I would like for my bathroom. Well done and thanks for sharing!!