Adapted from jmxp69's design from thingiverse this case protects the board of the receiver and gives a flat surface on the rear for mounting within a model.
Screw holes are sized for M3 screws and require tapping
print the body of the case standing up from the antenna cut-out, no supports needed
The author remixed this model.
I have taken this design by jmxp69 from thingiverse and remixed removing the holder for the antenna and making the receiver slot into the case with a screw fixed lid so that you can have a flat surface on the underside to use velcro or sticky pads to mount inside an airplane or other model.