3M Privacy Filter PFMA13 for 13" MacBook Air. Made to fit the 13" MacBook Air computer. 3M Privacy Filters allow you to work privately in public places. 3M privacy technology darkens on-screen data when viewed from the side, and provide higher clarity than competitive filters. The filter application system features an optically clear adhesive designed specifically for display screens. Testing proves that, when the adhesive is kept clean, filter can be repositioned hundreds of times. Also comes with traditional slide mount attachments. Helps keep on-screen information private; screen data is visible only to persons directly in front of the monitor. Clearer screen than competitive privacy filters. Protects your screen from dust and dirt. Reversible, with anti-glare surface on one side. Application adhesive specially formulated for display screens. Made in USA.