Shelf separator for IKEA Expedit

This separator splitts your 33,5mm x 33,5 mm IKEA boxes, eg. the Expedit shelf into 3 sections. I could be used either horizontal or vertical.
The label "Dingfabrik" features the Cologne FabLab. Visit the FabLab at http://dingfabrik.de

HINT: This separatur just a design with hopefully correct measurements.