About this 3D model

50mm fan mount to help cool PLA prints. My fan is powered by an external 12v power source. I used velcro to mount so that it is easily removed. This is the first version of several different fan mount/ducts I have designed. It seems to do the job but I am sure there is room for improvement. I am working on a similar snap-on design that should offer improved cooling. https://www.youtube.com/watch?v=W3Uojz7HGTs