HD Progressive 1.0 Perf is a front projection screen surface designed for high resolution up to 4K. Recommended for laser projectors with ultra-short, short, and standard throw lenses, its pure white appearance provides brilliant image color and is available in sizes up to 8' high seamless. This premium acoustically transparent surface is ideal for projects with speakers placed behind the surface and is GREENGUARD and GREENGUARD Gold certified to meet and exceed stringent standards for indoor air quality. HD Progressive 1.0 Perf can be cleaned with mild soap and water, is flame retardant and mildew resistant.