Corner Cubicle Shelf

I wanted a small shelf to put a picture on the corner of my cubicle above my monitors, so I designed this.

It has two arms that hook onto the cubicle wall (wall width is about 53mm) and hook onto the bottom of the shelf. The arm height is adjustable using the holes and the included screw.

I made two different shelves, the small is the one pictured with the Y2K bug displayed on it. The medium is about an inch longer on all sides. I think if I decide to use the medium shelf, I would glue