Geometric tile, looks like knit stitches. This is one of our larger specialty shapes that we call Picket. It can be set in this braid-like pattern (which we love), as well as vertically and horizontally. Where would you install this shape?
I love these paper posters because of the use of colour and angles. The paper adds layers and a small effect because of the way you can see the paper is laid over one another. I think the different colour papers work well and could work for a key code.