Enhance data security and handle sensitive tasks anywhere with this Staples 27-inch black widescreen privacy filter.Keep prying eyes away from sensitive tasks and materials with this Staples 27-inch black widescreen privacy filter. Compatible for use with 27-inch widescreen LCD monitors and laptop displays, this convenient filter enhances information security by limiting the viewing angle to users directly in front of the screen. This Staples 27-inch black widescreen privacy filter lets you take on sensitive tasks in public without compromising security.MEASURING FOR YOUR PRIVACY SCREEN PROTECTORS: Measure from the upper left corner diagonally down to the lower right corner. Make sure you measure the Viewable Area Only. For a proper fit, do NOT include the monitor or laptop frame or casing in your measurement. Also, note if your screen is in Standard (Ratio 4:3 +/-) or Widescreen (Ratio 16:9 +/-)format .