This is an empty original Ampex 350 or 351 transport case. It would work on most all rack mount Ampex

reel to reel machines or other 19 inch rack mount equipment.

 

Shown below with Ampex recorder in case, but recorder is not included.

Shown below with deck installed (deck not included) and how easy it is to work on the transport.

It also has a trap door on the side to store the cables.