Designed to work with storage modules from the Gridfinity system by Zack Freedman.

These racks are stackable, with small tabs to aid in both horizontal and vertical alignment.

I had these windowed divider bins in mind when i was designing this: https://thangs.com/designer/ZackFreedman/3d-model/Gridfinity%2520Window%2520Divider%2520Bin-60754