3x 1u separator

This was just a remix of dual 1u separator. This will allow you to hold 3 1u devices with some air-gap between them. Allowed me to keep my switch stack on my desk and not slide all over the place. Just print 2-4 depending on your use case and your off to town. The fit is a little loose (deliberately) so I just use a piece of double-sided tape in each slot to make sure it holds in place.