This is an alternative version of the 4 inch version I have up.

This one has Rounded Corners and beefed up inner walls

All of the mounting holes will work with standard 120mm fan mounting screws

Note that the model is exceptionally wide, cutting it into sections is recommended for smaller print beds. I've split it into 2 sections, to be printed with supports and glued together.

3D printing settingsLayer height: 0.2-0.3mmNozzle: 0.4mm (0.6-0.8mm*)Shell count: 2-3Top Bottom Layers: 4-5Supports: NoneWalls: 2-4Fill density: 0-20% (mostly for the bottom plate, increase bottom layers if you want to set to 0%)Print Method: FDMMaterial: PLA, PETG, ABS (Stiff when cool filament recommended)