3M74478 3M Executive Filter 19-21in CRT/LCD Bk

3M Black Framed Screen Filter. Optimal glass screen filter suitable for both LCD & CRT monitors. As well as optimising contrast, screen glare is reduced up to 99%, ELF/VLF E-field radiation is reduced by up to 99.9% & static charge prevented. 19 - 21' | More Info...