Flirc Raspberry Pi 4 case - replacement bottom cover

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.