Provides year-round comfort and energy savings by reflecting up to 70% of summer heat and retaining up to 55% of winter heating. Rejects 99% of damaging UV rays which offers protection to home furnishings and decor. Reduces rising energy costs. Insulating films are scratch-resistant for longer life and are compatible with dual-pane windows. Designed for easy DIY application. Film also provides a safe anti-lacerative barrier against broken glass caused by accidents or intrusions. Needs film application spray model No. RTK500 (SKU 260162) or model No. GTA002 (SKU 287482) to install.