BDF NC20 Window Film Premium High Performance Heat Control Nichrome 20, Medium Dark (36in X 7ft) SCRATCH RESISTANT COATING. Designed for non-thermal glass. Dark finish provides decent daytime privacy, making it hard for unwanted eyes to see through. EXCELLENT HEAT REJECTION. Helps reduce cooling costs especially during the summer through effective blocking of harmful solar rays. Also, minimizes fading on furnishings caused by the sun. STRONG ADHESIVES to last many years. For easier installation, remember to use A LOT of soap/water mixture to soak both the adhesive side and window. HIGH QUALITY PERFORMANCE films that are sensitive by nature. Please remember to take caution when handling the film as the slightest fold will create a permanent wrinkle. FREE TOOLS AND EASY INSTALLATION GUIDE to make installation DIY-friendly. Make sure window surface is completely clean and absolutely free of any blemishes. The dark, metallic shade will give the window a reflective appearance depending on lighting conditions. Provides both clear visibility and adequate view shielding. Window film is to be applied on the inside of your window unless specified otherwise. Perfect for rooms that have direct sunlight exposure to keep temperatures at a minimum.