Parameterized velocity stack generator for axial computer fans of various sizes. The fan mounting plate size is selectable based on standard sizes between 40mm and 220mm, however you will need to measure your fan center hub and inlet diameters and input them manually since those are not fully standardized. The default is configured for a 120mm fan.

2 pre-generated STLs are also included for 120mm fans, but I don't currently have other sizes to measure.

Use supports to print. The model is optimized to not have any overhangs, however the cone and fins are not flush with the plate to allow clearance for the fan rotating assembly, so they will need to be supported.