3M EF200XXLB ISO compliant black screen filter for use with 19-21 inch CRT or...
Increased viewing comfort and protection.Fits both traditional CRT and flat screen LCD monitors with unique 3M attachment systemReduces glare by up to 99 percent to help prevent eyestrain and headachesUp to 99.9 percent reduction of ELF/VLF E-field radiation and elimination of static charge when properly groundedOptimal tint glass for enhanced contrast and more accurate colour flat frame design