3M Black Framed Privacy Filter for Standard LCD/CRT Desktop Monitor fits 19" - 20" LCDs and 19" - 21" CRTs Proudly made in the USA Screen data is visible only to persons directly in front of the monitor. 3M privacy technology darkens on-screen data when viewed from the side. Reduces screen glare up to 95%. Provides maximum user flexibility -- fits both CRT and LCD desktop monitors. Excellent for open, high-traffic environments where on-screen data must be kept private.