The PJ930 projector kit is an ultra short throw projector designed to be used with the Steelcase eno whiteboards. However, you can use this with any brand interactive whiteboard.  This is a WXGA resolution projector designed to virtually eliminate the shadowing effect of a "regular" projector (one place on a desk or in the ceiling.)

This projector ships with a peerless mount and the beauty of the short throw projector is that most people can hang them themselves. They are easier to hang than a ceiling mounted projector as they bolt right into your wall above the whiteboard.