Compucessory CRT Anti-Radiation Glare Filter,16"-17" Screen,Platinum Optical glass has multilayer antireflective coating on both sides. Eliminates up to 99 percent of glare for a clear sharp image. CRT filter features a conductive coating that blocks 99.9 percent ELF/VLF E-field radiation. In addition, 99 percent of static electricity gets dissipated through a grounding cord. Adjustable brackets position filters for easy viewing.