Frost King 62 in. x 210 in. Outdoor Stretch Window Insulation Kit

Reduce energy loss in your home with the Thermwell Products Co., Inc. E/O 62 in. x 210 in. Outdoor Shrink Window Insulation Kit. This insulation kit stretches tight over outdoor windows, improves the R-factor of a single-pane window by up to 90% and includes enough material for 1 large picture window or 5 small separate windows.