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A three-piece window insulation kit: clear POF shrink film cut to roughly 47 by 63 inches per sheet, plus a roll of double-sided tape. The film is heat-shrinkable with a hair dryer, tear-resistant, waterproof and rated to stay flexible down to -58°F. It suits renters and homeowners sealing drafty single-pane or patio windows for winter, and can also block summer heat. Compared with rigid storm-window panels or magnetic kits, it is far cheaper and easier to remove, but it is thin plastic that can wrinkle and is not reusable once shrunk.
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This window insulation kit includes 3 pieces of clear thermal window film and 1 roll of double-sided tape. The kit can cover up to 3 windows. The film is transparent, so the view outside stays clear.
The film is made from POF, a heat-shrinkable material that resists tearing and wind shrinkage. It is elastic and waterproof, and it withstands temperatures as low as -58°F without hardening or deforming. It keeps cold air out and indoor heat in during winter, and keeps hot air out in summer.
To install, make sure the window frame surface is clean and dry, then apply the double-sided tape. The tape adheres well to the frame and leaves no marks when removed. A hair dryer can smooth out any wrinkles. The film can be cut to size, so it suits most windows, including aluminum frames, casement windows, attic fan shades and louver shades. Measure the window before installing.
