Made using quality 3M materials, this frameless privacy filter for 21.5" LCD desktop and notebook monitors allows you to keep classified or sensitive material from being viewed by others. Privacy filter protects screens from scratches and fingerprints and also minimizes glare and reduces eyestrain. Easily install or remove with no harm to screens. Privacy filter is 100 percent recyclable. Packaging is made using 100 percent recycled content. Filter fits 21-9/16" screens measured diagonally (18-3/4" horizontal, 10-9/16" vertical).