I picked up a Realacc RX5808 Pro Plus OSD Receiver and needed a cover for my Eachine Ev200D goggles so I designed one.
I printed it at 0.15mm layer height with support.
Infill does not matter.
The receiver will be a real tight fit if you do not clean up the support leftovers on the top and bottom of the inside, once cleaned up it fits beautifully.
I cut the control knob space all the way out because the EV200Ds sit the receiver really, really low so it is hard to reach into and get your finger into so I had to cut it all the way out to get my fat finger into it.