HEAT INSULATION,ENERGY SAVING and BASIC PARAMETERS - One way window film blocks out 90% of infrared rays and 85% of UV rays reducing fading and aging of interior furnishings. The heat control window film can retain heat in winter and keep it out in summer, reducing expensive heating and cooling costs. 15% of VLT helps effectively reduce glare. STATIC CLING AND NON ADHESIVES – This self adhesive window privacy film is free of glue design, no chemical release, very easy to install, just make sure window surface is completely clean and absolutely free of any blemishes. Remember to use A LOT of soap/water mixture to soak both the adhesive side and window.--NOTICE:THE SIDE PEELED OFF FROM THE FILM SHOULD BE ATTACHED TO THE GLASS. THICKNESS AND HIGH QUALITY - Glass film the thickness of 6 mil window film has excellent thermal insulation effect, with anti-scratch layer on the surface, friction resisting, won’t fade nor blister, easy to remove, economical and practical.