The original Flirc case bottom plate gets sticky and degrades after a while. This is a printable replacement part.

I filled the magnet holes that the original design had so it's just a plain bottom plate.

Comes in variants  with/without vents on the bottom. All files are oriented in the print orientation. 

Replacement top lid available here.

Update 7 March 2023: Slightly tweaked some parts to adjust for clearance issues.