Design includes a slim magnetic strip allowing for quick and easy attachment, limited viewing angle narrows the field of vision to +/- 30 degrees, blue light reduction filters out harmful rays by up to 22%, reversible viewing options - one side has a matte finish & the other side is glossy. *** CLEARANCE ITEM - LIMITED STOCK AVAILABILITY AT THIS PRICE *** .Trust Kensington, the choice of IT professionals, to help protect the sensitive information on your laptop and reduce the chances of wandering eyes viewing confidential data on your screen. FP Series Laptop Privacy Screens limit the field of vision to +/- 30 degrees so a person off to the side only sees a dark screen. They are easy to install, either with included frameless tab holders or double-sided tape. The reversible privacy screens also use an anti-reflective coating to reduce glare, and they filter out harmful blue light by up to 30 percent.