The 3M privacy filter from Lenovo utilizes the patented 3M microlouver privacy technology so only persons directly in front of the display can clearly see the image on screen. Passers-by or those viewing from an angle see only a blank, dark screen. With identity theft concerns growing and information disclosure laws becoming increasingly more restrictive, the requirement to protect sensitive data is critical. Unique attachment system keeps the security filter in place even when the laptop is closed. Features Compatible with Screen sizes up to 12. 5\" wide Designed for: Lenovo Think Pad Edge 11\" Lenovo Think Pad Edge E120 Lenovo Think Pad Edge E125 Lenovo Think Pad X120e Lenovo Think Pad X121e Lenovo Think Pad X130e Lenovo Think Pad X220 Lenovo Think Pad X220i Dimensions Width 27. 8 cm Depth 15. 7 cm Height 0. 05 mm Weight 27 g