3M Frameless Black Privacy Filters attach easily to most LCD Laptops， Notebooks & Netbooks to protect your data and your device. The filter helps protect confidential information from prying eyes， even when you are on the go. Screen data is visible only to persons directly in front of the screen. Darkens on-screen information when viewed from the side. Helps protect valuable LCD and laptop displays from scratches， fingerprints and damage. Improves screen contrast and reduces screen glare and reflections. Reversible choose matter for reduced glare or gloss finish for increased clarity. Frameless design with two attachment methods included. Model no.: PF15.4W.