Finally I've found a website were you can order the cubes you need for building a C&C cage. I've been looking for ages to build a cage for my hedgehog and came across this forum, I saw a lot of people had trouble finding them so I thought to share. Here's the link: Draad Opberg Kubus - De Leestafel Tijdschriften
They cost 29,95 E (you'll get 20 grids).
They cost 29,95 E (you'll get 20 grids).