M-D 04283 84" x 112" Shrink & Seal Window Insulation KiT

M-D Polar Block Clear Indoor Insulation Kit 88 in. W X 110 in. features crystal-clear film designed for use on interior windows to reduce cold air drafts. It improves the insulating R-value of windows by up to 90 percent. The clear film shrinks tight and wrinkle-free, effectively preventing cold drafts and heat loss through window panes.