3M Privacy Filters PF12.5W9 are designed to fit 16 9 widescreen notebooks with a viewable screen size of 12.5. Using 3M™ microlouver technology the filter gives full 60o privacy protection on either side protecting sensitive information from unauthorised viewing. Easy to attach the filter can remain in place when the notebook is not in use providing additional screen protection. With a light matte finish the filter can help to reduce screen glare. 3M™ microlouver privacy technology provides privacy screen protection for sensitive data Reversible glossy or matte screen finish. Matte screen finish reduces discomfort from screen glare.Two easy on easy off attachment systems. Filter stays in place when notebook is closed Notebook user working in sensitive areas airports internet cafes open plan offices Visual security protecting confidential/sensitive information - customer commercial medical government e-examination Increase productivity by removing user privacy concerns To ensure proper fit measure the viewable height and width of your screen. (Do not include the screen frame/bezel in you measurement.) Then choose the filter size that matches your exact measurements or slightly smaller Privacy Filters are compliant with ISO27001 Information Security Management