I just got it and tried installing.  Instructions manual has very little(almost non existent) install Instructions.  Template needs to be cut before using. Not clarified.  Install screws were not properly explained. 

Overall the product is heavy,  and hence I am feeling must be due to the fan assembly. 

It's not too quiet as it boasts, but I am ok for now. LEDs are very bright.  Very good.

The install is very tricky for the screws at the top.