Here is My entry for the
Mobile Meeting Room
The aluminum version is a STEP file
What you have here is 2 versions. One version
uses extruded aluminum (see parts drawing)
and the sound proofing material is frame with
aluminum with acrylic windows. This is a more
high end version. Not really a DIY application. but
it shows how it can be made if you replaced the aluminum with wood
like version 2
Version 2 is a DIY application.
All that is needed is
Simpson Strong-Tie brackets
Sound proof panels (see image)
Frame each sound proof panel and then attached them together
at the top and bottom. This could be any size needed. depending
the number of panels you use.
Both versions show a pocket door system. Either swinging or pocket
door could work.
You can see how the aluminum version is assembled in the photos. Some steps would be skipped if you use the wood version.
The last 2 image you see is A wood version and a large 4 wall room