3M Indoor Oversized Window Insulator Kit, 1 Kit
3M Indoor Oversized Window Insulator Kit, 1 Kit
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3M Indoor Oversized Window Insulator Kit, 1 Kit

Key item features

  • Secure Adhesion: Scotch double-sided tape ensures a firm hold between the insulating film and window surfaces, maintaining insulation throughout the season.
  • Energy Savings: This insulator kit is designed to reduce heating costs by keeping cold drafts out and warm air inside.
  • Moisture Control: The kit effectively reduces condensation and prevents frost buildup on windows, contributing to a clearer view.
  • Effortless Installation: Featuring a quick and easy installation process, this kit allows for convenient setup to insulate windows.
  • Generous Sizing: Specifically designed to fit one extra-large indoor window, measuring 6 feet 8 inches by 19.5 feet.
  • Clear Film: Utilizes heat shrink window film that offers the clearest visibility among similar products, ensuring an unobstructed view.
  • Durable Hold: Engineered with Scotch tape technology, the window film stays securely in place for the entire season.
  • Versatile Sizing: Available in a variety of indoor and outdoor window sizes to accommodate different needs.
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Starting from $16.96
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Customer ratings & reviews

3.4 out of 5 stars
stars22 ratings18 reviews
How item rating is calculated
  1. 5 stars55% (12)
  2. 4 stars5% (1)
  3. 3 stars0% (0)
  4. 2 stars9% (2)
  5. 1 star32% (7)

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Showing 1-3 of 18 reviews

May 21, 2026
sharon
Item details
Size: XL 6'8\" x 19.5'
Sold and shipped byEvitz
5 out of 5 stars review

Verified Purchase

This was easy for me to install without help and it stopped the draft from window a lot

Incentivized Review
Helpful?5DI1TY8NBUCP38473361
May 29, 2026
Adreana
Item details
Size: XL 6'8\" x 19.5'
Sold and shipped byEvitz
5 out of 5 stars review

Verified Purchase

Worked great, would buy again.

Incentivized Review
Helpful?5DI1TY8NBUCP38473361
Dec 17, 2025
Debbie
Item details
Size: XL 6'8\" x 19.5'
Sold and shipped byEvitz
5 out of 5 stars review

Verified Purchase

Seals tight and stays adhered

Incentivized Review
Helpful?5DI1TY8NBUCP38473361