No, but I designed a duct / velocity stack for noctua l9 :
Here is another design by someone else, that should do the same job:
These two are 10mm in height, but might cause some trouble depending on ram, cpu...
True, Velcro is simple, effective, it even dampens the vibrations, there is the power button abobe and all the cables, so it can't come loose, if you heat it during removal it won't damage the paint, it's great, but I'll probably go with the frame, I just like making stuff..
I have a 15mm drive and a non modular psu. There should be a 71x126x21mm space for the drive below the power button (case horizontal). I'm thinking to 3d print a frame that will mount on two radiator holes and the power button. Does that sound like a good plan? Would that cause thermal issues?
I don't own a l9i / l9a, but I have done some research based on reviews, forum posts and videos.
My understanding is that, if you use a fan duct on the 15mm fan, a 25mm fan upgrade will not make a worthy difference in thermals and the system will be quite louder.
I know the design is finalized, and I am no engineer, but if air is pulled through the radiator into the case and exhausted through holes behind the fan, in theory (correct me if i'm wrong): There will be a direct air channel, in which air will flow with higher velocity (relatively), therefore...