These are fixes for the plastic parts that hold the handle.
It is compatible with the Frigidaire Gallery series model FMT148GPB1, I'm not sure about any other.
I've also included a larger bottom part (our microwave door's whole corner was broken). Probably less useful, but you can always modify it from the f3d file included.
If you need to check how to disassemble the door, I recommend checking Youtube:
The author marked this model as their own original creation.