Do it Best’s Window Insulation Shrink Kit is a crystal clear plastic sheet that shrinks tight and wrinkle free with an ordinary hand-held hair dryer. Easily installed on metal, painted, or varnished wood or vinyl clad frames with double-faced tape. Increases R-value of single pane windows up to 90%.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer.
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