If you're looking for a rack-mountable dual screen solution, then this is probably your best bet. The SmartView Duo from Blackmagic Design is what we took a look at in this episode of Show and Tell.
More product information: https://www.blackmagicdesign.com/products/smartview.
This video is our a part of our YouTube series Show and Tell, where we take you through the gear needed for event videography and live streaming! Watch all the videos here!