100% Light Blocking blackout film helps darken rooms, reduce outside visibility, and add privacy for office, home, glass door, bathroom, and bedroom; ideal when stronger light control is needed during daytime rest or screen time. Static cling no glue design installs with water on smooth glass, so there is no adhesive mess during application. Comfort focused surface helps filter strong sunlight, reduce warm direct sun, and soften uncomfortable glare while keeping the glass more pleasant to use each day. Works on windows, glass doors and other flat non textured glass surfaces; avoid rough, dusty, frosted, or uneven glass for best adhesion. For best results, clean the glass first, spray plenty of water, remove the backing film, squeegee out bubbles, and trim the edges after placement. 100% Blackout Window Film No Glue Room Darkening Static Cling Strips Frosted Sliding Glass Door Film Window Covering Stickers Tints for Home Office,17.5 inches by 78.7 inches