The Music Store 3U Rackbox is a 19" Rackbox with Spring Lock. At a size of 3 rack units and featuring a spring lock, this rackbox will offer reliable storage to your equipment.
The main features of the Music Store 3U Rackbox include:
I used this to fill empty rack space in my music studio desk. For this purpose it is unnecessary heavy lump of metal. A light plastic one would be just as good (but none exists?). Anyway it's good quality, over engineered..build like a tank.