This is a 5x3 Gridfinity bin for storing setup blocks (mine are “Eanosic” brand, but there are other generic brands that are similar). The bin includes a lip for stacking and measures approximately 126mm x 210mm x 38.8mm. Size text can be printed a different color with AMS.

If you have another setup block brand, check that the blocks are approximately 3 inches (77mm) long.

In the sample photos, I used Bambu Wood PLA (white oak) and Bambu Basic PLA (black).