21.5 inches Widescreen, Filter size(WxH) = 18.75x10.56 inch(=477x268mm), 16:9 aspect ratio, "Check your screen size before purchasing!" | Effective "black out" privacy from side views outside the 60-degree viewing angle. This function works for left and right sides, not for back side. | Reversible glossy or matte surface finish, matte side reduces extra glare and reflections | Over 3H surface hardness anti-scratch technology protects screen from dirt, debris and scratches. / Simple bulk package for supplying in the most reasonable price. | Reduces digital eye strain, Blocks 100% of Hazardous UV light and reduces HEV Bluelight up to 100% with excellent Color Transmittance, Hanging type screen protector to monitor - easy to use

27" W to 26" W, 25" W inches Widescreen, Filter size(W x H) : (24.40 x 14.56 inch = 620 x 370 mm) | Effective "black out" privacy from side views outside the 60-degree viewing angle. This function works for left and right sides, not for back side. | Cutting bluelight and anti glare function | Over 3H surface hardness anti-scratch technology protects screen from dirt, debris and scratches. / Simple bulk package for supplying in the most reasonable price. | Reduces digital eye strain, Blocks 100% of Hazardous UV light and reduces HEV Bluelight up to 100% with excellent Color Transmittance, Hanging type screen protector to monitor - easy to use

It fits 19” Inch Desktop monitors with 5:4 aspect ratio (REFER TO THE SIZE IMAGE FOR MEASUREMENT INFORMATION BEFORE PLACING AN ORDER) - width x length :14.83 x 11.89 inches (377x302mm) | Effective "black out" privacy from side views outside the 60-degree viewing angle | Reversible glossy or matte surface finish, matte side reduces extra glare and reflections | Over 3H surface hardness anti-scratch technology protects screen from dirt, debris and scratches | Simple bulk package for supplying in the most reasonable price