M-d - Polar Block - Indoor Window Film Insulator Kit - Clear - 62 In.

This innovative window insulation solution is designed to enhance your home's energy efficientty by preventing cold drafts and heat loss through your windowpains. Crystal clear film for use on interior windows and it improves the insulating R-value of windows up to 90 percent. Easy to install with tape and hair dryer. Clear film shrinks tight and wrinkle free to prevent cold drafts and heat loss through window panes.