Privacy filter is designed for use with your 15.6" (viewable area only) wide-screen laptop or flat panel monitors. Blackout technology darkens screen images when monitors are viewed from the side. You will experience a crystal-clear screen image from straight-on view. TAA-compliant filter protects monitor screens from fingerprints and scratches. Reversible filter's matte side helps reduce glare. Screen is easy to attach and remove. Screen size should be taken by diagonal measurement.