Modified this to have slightly higher than the original design. Original design has about 50mm height which wasn't enough for my requirement. I like this design where everything is enclosed without requiring glue and screws, only clip together would suffice.
There are 2 files for the base, one with fan mounting stretched, another with stock fan mounting dimension. But both has the same height which is 60mm. I highly suggest for for + version.
It is a pain to work on sketchup (literally I don't like sketchup) just to modify this design.