About this 3D model
We got a large whiteboard, but it didn't quite sit flat when we hung it. These little, very simple anchor clips did the trick quite nicely -- one on the bottom of either side. This is sized for whiteboards that are 3/8 inch thick, such as the popular Quartet® Dry Erase Board with Melamine Surface. Let me know if you need the parametric SCAD file or need a different size.