We needed to close the grip openings of our euro containers. Why? Mice. Stored outside the house in the garage you may have some mice seeking new homes in such containers. The grip holes are more of an invitation but a barrier.

The grip inserts should snap in place, but every euro container brand is a little bit different so you may have to adjust the design by either scaling the STL or editing the OpenSCAD file and create the STL yourself. Another tip: use a deburring tool to smooth off the edges of the grip opening.

Printing in 0.3mm layer height works just fine and helps speeding up the printing process. I used 30% infill and found it sufficient.