Kit for insulating windows with heat-shrink film
The Frost King V73H kit is designed to insulate windows and improve their energy efficiency. The crystal-clear plastic film is easily stretched and smoothed (without wrinkles) using a standard handheld hair dryer. The film is easily attached to metal, painted, lacquered wood, or vinyl frames using double-sided tape. Using the film increases the R-value (thermal resistance) of single-pane windows by up to 90%, helping to save on heating.