The UMS1-3.5 is a UMS 1RU rackshelf. Its universal mounting pattern holds small items in the front or rear of the rack and includes counter-sunk holes to match popular Extron devices.
The UMS1-3/5 is steel constructed with black powder coat finish, and includes 3/16" length flat head screws, 16 #4 and 4 #6, for the purpose of securing components to the shelf.