This is a 13.5oz spray can of Diffusion Coat 5D from Elite Screens. It is used after you have applied optional Elite ChromaFlux Paint to boost the 2D capability of the ChromaFlux. This spray provides a coating that makes the finished screen more resistant to hot-spotting, snow effects and glare. It can be used indoors or outdoors and applies/dries like house paint. The 98% polarization retention factor that compensates for any lost light will slightly reduce your screen's Gain rating.