Insulation Kit for Patio Door or Large Window, 84 x 110-In.

Up to 35% of the heat in your house can leak out of poorly insulated windows. Frost King Shrink Film is the perfect low cost solution to keeping drafts and cold out of your house. Easy to install, it takes just minutes to put them over all the windows in your house, Frost King Window Shrink Film will keep the heat in and the cold out all winter long.