Box for Systainer old generation

I have some tools from Festool and they are delivered on Systainer. In the old ones, even if there is an insert for the tool itself, sometimes if you need to keep special items, there is no place to store them.

On the top of the Systainer there is a groove on each side where it's possible to attach a box. I made in two pieces for easier printing. By the way, you can put it on left or right side, according to the position you put the support.

Printing is made with PLA+ and with standard parameters.

Assembly is made by glue even if I maintain the holes to use 3mm screw directly in the support.