Q : Hot spot diffusion worked great and we could see a significant difference over a traditional dry erase board.

Yes, both screen variants, the high gain WhiteBoardScreen™ and matte white WhiteBoardScreen™ Universal use a series of reflective and diffusion layers that are surfaced by Elite’s scratch-resistant optical nanotech resin. This creates a superior image that is free from the kinds of visual artifacts created by projecting directly onto a regular projection screen