Computer Cases that lay flat

[Julius_11]

I'm working with limited desk space in a nook called a study on my floor plan, my desk is 60 inches and I am looking at using triple 27' monitors on a mount. It would be ideal if I could have my PC setup flat underneath the right side. I know Thermaltake P5 lays flat but it's a bit too wide.

 

[Alabalcho]

For Micro-ATX boards, there are plenty of desktop-style compact cases. My latest setup was i5-6400 based, no external GPU (don't need one), put inside a this case - it can be put in both directions.

I have built a 15"x15"x4" bracket out of plywood, mounted it underneath, and my computer sits (almost invisible) under the desktop. On my previous desk, the computer sat inside the (useless) keyboard tray.

 

[Vic 40]

Maybe look at something like this,
http://pcpartpicker.com/product/dsR48d/silverstone-case-gd09b
more examples,
http://pcpartpicker.com/products/case/#t=11&sort=a8

 

[Julius_11]

Thanks for the suggestions... I ended up going with the Thermaltake Core P3 which seems to be substantially smaller than the P5. When horizontal claims to be 8" in height which would be perfect to fit under most monitor mounts that hold monitors eye level.