3M PF23.8W9 Privacy Screen Filter For 23.8" Widescreen Desktop LCD Monitors

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 .