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

3.2 stars out of 18 reviews
(3.2)|
18 ratings

Key item features

  • Secure Adhesion: Scotch double-sided tape ensures a firm hold between the insulating film and window surfaces, contributing to the kit's effectiveness.
  • Energy Savings: This insulator kit is designed to reduce heating costs by keeping cold drafts out and warm air in, enhancing energy efficiency.
  • Condensation Control: The kit actively reduces condensation and prevents frost buildup on windows, maintaining clearer views and drier surfaces.
  • Effortless Installation: Featuring a quick and easy installation process, this kit allows for convenient setup without extensive effort.
  • Generous Sizing: Specifically fits one extra-large indoor window, measuring 6 feet 8 inches by 19.5 feet, accommodating larger window dimensions.
  • Durable Film: Utilizes heat shrink window film, known for its clarity and ability to stay securely in place throughout the entire season.
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3.2 out of 5 stars
stars18 ratings15 reviews
How item rating is calculated
  1. 5 stars50% (9)
  2. 4 stars6% (1)
  3. 3 stars0% (0)
  4. 2 stars6% (1)
  5. 1 star39% (7)

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Showing 1-3 of 15 reviews

Nov 7, 2025
Joel
Top Reviewer
Item details
Size: XL 6'8\" x 19.5'
Sold and shipped byFits or Finds
5 out of 5 stars review

Verified Purchase

KEEP COLD AIR OUT

EXCELLENT PRODUCT, KEEPS COLD ARE FROM ACCESS ROOMS

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
Oct 31, 2016
Richmond BC
5 out of 5 stars review

Seller Verified Purchase

Great product

This is a high quality 3M product that you can purchase from Walmart for much less than the unknown brands in the hardware stores. This is a very long piece that can easily cover two large windows (almost twenty feet) It is perfectly clear and the 3M tape holds extremely well. Highly recommend.

Review from walmart.ca
Helpful?5DI1TY8NBUCP38473361