Rack mount for Raspberry Pi

[Bishop Crane]

Not sure if this belongs here, or somewhere else?

Anyway, I'm looking for a rack mount for a number of Raspberry Pi, at least 16.
The only requirement is that both the Network and HDMI are usable.

Most of what I have found requires a 3D printer, the only pre-made one I have found is this;
http://my.bitscope.com/store/?p=view&i=product+BR20A
But it looks like the HDMI is not accessible using this.

Does anyone know of anything off the shelf, or should I be getting a 3D printer for the office?

[Sauron]

You could use legos or just glue/ziptie a bunch of acrylic cases together

[bob345]

get yourself some nylon standoffs, a 1u or whatever size rack, and a drill. You wont find what you want pre-made. 

[Faisal A]

https://www.servethehome.com/bitscope-raspberry-pi-cluster-3000-cores-30u/

[Bishop Crane]

So the bitscope ones don't allow access to the hdmi port.
From what I've seen I'm going to get a 3D Printer and print one, they either don't allow access to the HDMI or take up a vast amount of space