Clear blinds help create a complete whiteboard solution within the classroom, combining the benefits of an interactive and conventional whiteboard, in the same space. The blind attaches to the wall above the whiteboard and rolls down over the surface, using a winding chain, at the side. The clear sheet hugs the whiteboard, making it easy to write straight onto the surface. It is compatible with the majority of dry wipe markers. Great product at a great price. The â€˜Clear Blind -1215mmâ€™ is suitable for use on all interactive whiteboards, where width of 'white interactive area' is approximately 1215mm.