--- product_id: 12834013 title: "Indoor Kit Covers 2 - 3' x 5' Windows" brand: "3m" price: "€ 24.05" currency: EUR in_stock: true category: "3 M" url: https://www.desertcart.be/products/12834013-indoor-kit-covers-2-3-x-5-windows store_origin: BE region: Belgium --- # Strong double-sided Scotch tape seal Covers 2 windows (3'x5') Easy, wrinkle-free heat shrink film Indoor Kit Covers 2 - 3' x 5' Windows **Brand:** 3m **Price:** € 24.05 **Availability:** ✅ In Stock ## Summary > 🪟 Lock in warmth, lose the chill—winter-proof your windows like a pro! ## Quick Answers - **What is this?** Indoor Kit Covers 2 - 3' x 5' Windows by 3m - **How much does it cost?** € 24.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/12834013-indoor-kit-covers-2-3-x-5-windows) ## Best For - 3m enthusiasts ## Why This Product - Trusted 3m brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Pro Installation:** No tools, no hassle—just peel, stick, and heat for a flawless, crystal-clear finish. - • **Seal in Warmth, Seal out Cold:** Create an airtight barrier that slashes heating bills and keeps your space cozy all winter. - • **Condensation & Frost? Not Here.:** Advanced film technology reduces moisture buildup, protecting your windows and view. - • **Fits Perfectly, Looks Invisible:** Custom-cut for two standard windows with a sleek, transparent film that blends seamlessly. - • **Trusted 3M Quality & Durability:** Made in the USA with premium materials that last the entire cold season without fail. ## Overview The 3M Indoor Window Insulation Kit includes heat shrink film and double-sided Scotch mounting tape designed to insulate two 3'x5' windows. It creates an airtight seal that reduces drafts, condensation, and frost buildup, helping lower heating costs. Easy to install with a wrinkle-free finish, this durable kit is made in the USA and fits most indoor window frames for a clear, energy-efficient solution all winter long. ## Description Product Description Available in a variety of indoor and outdoor window sizes. 3M Window Insulator Kits keep cold drafts out and warm air in through heat shrink window film and Scotch Window Film Mounting Tape. 3M window kits have the clearest film and stay up all season long with Scotch tape technology. Scotch double sided tape holds firmly between films and surfaces. desertcart.com With the 3M indoor window insulator kit, you can lower your heating bills during the winter and make your home more energy-efficient. Part of 3M's line of energy-saving products, this kit includes window insulation film and a roll of double-sided mounting tape to create an airtight seal. Stretching the film removes wrinkles for a transparent view. This version of the 3M indoor window insulator kit enables you to insulate two 3-foot-by-5-foot windows.Keep the Heat In and the Cold Out Made by 3M, this indoor window insulator kit contains window insulation film along with Scotch Window Film Tape to keep cold drafts out and warm air in. As a result, you can reduce your heating costs during the winter. The film shrinks tight around your window for a transparent, wrinkle-free fit and is made to reduce condensation and prevent frost build-up. Double-Sided Mounting Tape for a Secure Seal Included with this kit is a 1/2-inch-by-12-yard roll of 3M window film mounting tape to keep your insulation in place all season long. This double-sided tape seals off cracks and crevices, creates an airtight seal, and establishes a strong bond between the surface, the tape, and the insulation film, as recommended in ENERGY STAR's "Seal and Insulate" guidelines. Featuring a convenient, ready-to-peel liner, the tape adheres easily to a variety of surfaces and stays intact upon removal.Simple, Fast Installation Installing the window insulation is easy. You simply unfold the film and cut it to the width of the window, allowing an extra inch on all sides. Next, you firmly apply the mounting tape around the window frame and remove the paper liner. Then you apply the film to the tape, starting at the top of the window, and reposition and stretch the film to remove wrinkles. Finally, you use a blow dryer to remove any remaining wrinkles, then trim any excess film.Made in the United States, and designed for indoor use only, this insulator kit can be used with aluminum, vinyl-clad, or painted or varnished wood molding, but it should not be applied to veneer paneling or Lauan mahogany molding. The film and tape should be removed from the window at the end of the season. The film measures 4 square yards, or 5.16 feet by 7 feet by 0.75 thousandths of an inch (H x W x D), and weighs 0.13 pounds.What's in the Box Window insulation film and one roll of mounting tape. ## Features - Scotch double sided tape holds firmly between films and surfaces - Reduces condensation and prevents frost buildup - Quick and easy installation - Fits two 3'x 5' indoor windows ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000AXXCUC | | Best Sellers Rank | #22,124 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Weatherproofing Window Insulation Kits | | Brand Name | 3M | | Coverage | The coverage of the 3M Indoor Window Insulation Kit is approximately 30 square feet, as it can cover two 3ft x 5ft windows. | | Customer Reviews | 3.9 3.9 out of 5 stars (15,567) | | Global Trade Identification Number | 00051131569508 | | Included Components | 62 X 42 in Film, 1/2 X 432 in Tape, (2) 3 X 5 ft Windows | | Item Thickness | 10 Inches | | Item Type Name | Window Insulator Kit | | Manufacturer | 3M | | Manufacturer Part Number | 2120W-6 | | Manufacturer Warranty Description | Warranty | | Material Type | Plastic | | Model Number | 2120W | | Recommended Uses For Product | Insulating indoor windows | | UPC | 051131569508 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** 3M - **Global Trade Identification Number:** 00051131569508 - **Item Thickness:** 10 Inches - **Material:** Plastic - **Recommended Uses For Product:** Insulating indoor windows ## Images ![Indoor Kit Covers 2 - 3' x 5' Windows - Image 1](https://m.media-amazon.com/images/I/6181xPK9SIL.jpg) ![Indoor Kit Covers 2 - 3' x 5' Windows - Image 2](https://m.media-amazon.com/images/I/81nZBsNgncL.jpg) ![Indoor Kit Covers 2 - 3' x 5' Windows - Image 3](https://m.media-amazon.com/images/I/5170GQGCItL.jpg) ![Indoor Kit Covers 2 - 3' x 5' Windows - Image 4](https://m.media-amazon.com/images/I/51VpP3HgV3L.jpg) ![Indoor Kit Covers 2 - 3' x 5' Windows - Image 5](https://m.media-amazon.com/images/I/61VlTGUSPLL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Will this work for insulating from the heat of a hot climate too?** A: I would assume so, though we live in Maine near the coast where it can be in the teens and 20s sometimesduring the weather; I assume it would work since 3M is an excellent product - the hardware versionsdon't seem to work as well. You'll need the 3M tape for this as well. **Q: Has anyone had success applying this to a window without trim? Our 50s track house just has drywall-cased windows.** A: I want an answer to this too! I also have the drywall-cased windows from the 50s. Thanks!! **Q: I am from the South, so my big question is, does it insulates from heat so well as it does from cold? Will it last if you leave it permanently, or you need to replace it every year? Third question would be, can you glue it against dry wall? Thanks** A: Old query, but for newbies: this would work as well to keep the A/C air away from the window pane, thus it would insulate heat as well as cold. It's just physics. It forms a dead air space just like a storm window (if you know what those are up north). You could leave it on, but probably would not last permanently. I don't see how you could use glue; it is intended to be mounted only with the double stick tape provided in the box. Browse other replies who have said that they applied it directly to dry wall (sheet rock). BTW another response said: “Yes but you can run into a moisture issue. We tried it and it it worked well except that the A/C created condensation on the plastic which eventually pooled up between the window and the plastic creating mold” **Q: How does this hold up compared to frost king?** A: This holds up much better then frost king... I have never had frost king last a whole season on my windows but the 3M lasts no matter how long the cold season has lasted. I will never go back to using Frost King again. ## Frequently Bought Together - 3M Indoor Window Insulation, Insulator Kit for 2 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2120W-6) - 3M Window Film Mounting Tape, 1/2" in x 13.8 yd Roll, For Use with 3M Window Insulator Kits, Use on Painted Wood, Aluminum, and Vinyl-Clad Molding and More, Indoor Use, Easy to Apply (2145C) - 3M Outdoor Patio Door Clear Insulation Kit, Heat or Cold Window Insulation Kit for Large Windows and Sliding Doors, 1-Door Kit, 7 ft. X 9.3 ft. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/12834013-indoor-kit-covers-2-3-x-5-windows](https://www.desertcart.be/products/12834013-indoor-kit-covers-2-3-x-5-windows) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-26*