LightDims Customizable Original Strength - Light Dimming Sheet for Alarm Clocks, Electronics and Appliances and more. Dims 50-80% of Light, 8&rdquo;x10&rdquo; Extra Large Size in Retail Packaging Contains 1 black colored 8.5" x 10.75 Extra large sized sheet you can cut to size. Dim 50-80% of light from annoying bright LEDs on electronics, alarm clocks and security systems in the home, office, or car. Easy to use, just trace, cut, peel and stick. Self-Adhesive does NOT leave any sticky residue when you remove them. LightDims Original Strength allow you to continue to view the light without flare and glare at a reduced brightness. Includes retail store packaging.