Do it Best 42 In. W. x 62 In. L. Extra Strength Indoor Window Insulation Kit (3-Pack)

The Do it Best Extra Strength Indoor Window Insulation Kit is designed for high-traffic areas, offering twice the thickness of standard film to resist accidental punctures and increase R-value by up to 90%. The crystal-clear plastic sheet shrinks tight and wrinkle-free with a simple hairdryer, providing a neat, energy-efficient seal. It easily installs on metal, painted, varnished wood, or vinyl-clad window frames using the included double-face tape.

• Extra strength film, twice as thick as standard insulation kits
• 1.5 mil thickness
• Twice as thick as standard film for extra durability
• Increases R-value up to 90% for better insulation
• Fits 3 standard windows for comprehensive coverage
• Shrinks tight and wrinkle-free with a hairdryer
• Includes double-face tape for easy installation