Based on my euro modules, this version is designed to hold a shuttered LC coupler.
There are two design variants so you can see which works best. The shutter is removed from the fibre module, which then clips into place. The shutter can then be replaced though the front and remains securely in place.
I've found these to work fine without any supports, however I do tend to paint on supports for the top of the slots on the type B. The clips (both the plate clip, and small coupler clips) tend to be fine without supports as the overhang is quite minimal but YMMV.
The author marked this model as their own original creation.