This provides energy-saving efficiency. Frost King window insulation kit for interior use. Window Film Type Decorative Window Film. Type Window Film. Energy saving efficiency to increase R-Values up to 90%.
Frost King Shrink Film Window Kit 4 Pack, Clear Transparent Insulation V73/4T
❄️Clear Window Insulation Shrink Film – Interior Use. Installs quickly using theincluded double-faced tape. Simply apply the film and use ahair dryer to shrink it tight for a smooth, transparent finish.