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M-D Polar Block Clear Indoor Window Film Insulator Kit 42 in. W X 62 in. L
M-D Polar Block Clear Indoor Window Film Insulator Kit 42 in. W X 62 in. L
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Crystal clear film for use on interior windows to reduce cold air drafts. Improves the insulating R-value of windows up to 90 percent. Easy to install with tape and hair dryer. Clear film shrinks tight and wrinkle free to prevent cold drafts and heat loss through window panes.