---
product_id: 222780224
title: "3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6)"
brand: "3m"
price: "€ 75.92"
currency: EUR
in_stock: true
url: https://www.desertcart.es/products/222780224-3m-indoor-window-insulation-insulator-kit-for-5-windows-3ft
store_origin: ES
region: Spain
---

# Boosts window insulation by 90% Blocks cold drafts effectively Easy heat-shrink application 3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6)

**Brand:** 3m
**Price:** € 75.92
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay warm, save smart — winter-proof your windows with 3M!

## Quick Answers

- **What is this?** 3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6) by 3m
- **How much does it cost?** € 75.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/222780224-3m-indoor-window-insulation-insulator-kit-for-5-windows-3ft)

## 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

- • **Proudly Made in the USA:** Quality you can trust, supporting local manufacturing with every purchase.
- • **Slash Your Heating Bills:** Increase your window’s R-value by 90%, saving energy and cutting costs effortlessly.
- • **Fits Five Standard Windows:** Complete kit covers five 3ft x 5ft windows, perfect for modern homes and apartments.
- • **Effortless, Wrinkle-Free Installation:** Clear, tight-fitting film with Scotch double-sided tape—no bubbles, no hassle.
- • **Seal in the Warmth, Seal Out the Chill:** Advanced heat-shrink film locks out cold air for cozy interiors all winter long.

## Overview

The 3M Indoor Window Insulation Kit includes heat-shrink film and Scotch mounting tape designed to insulate five standard 3ft x 5ft windows. Made in the USA, it increases single-pane window R-value by 90%, reduces heating costs, and installs easily with a clear, wrinkle-free finish that lasts all season.

## Description

3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6)

## Features

- Made in USA
- Included: (1) 5.16' x 17.5' film sheet, (2) rolls of tape, 1/2" x 27.7 yd
- Insulates five 3' x 5' windows
- Lowers heating costs and saves energy,Applies easily, shrinking tight, wrinkle-free and clear on glass,Increasing the R-value of single pane window by 90%

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Global Trade Identification Number | 00051131500242, 05113150024217 |
| Manufacturer | 3M |
| UPC | 051131500242 |
| Department | Unisex-Adult |
| Country of Origin | USA |
| Item model number | 2141W-6 |
| Product Dimensions | 152.4 x 91.44 x 0.25 cm; 294.84 g |
| ASIN | B00002NCJI |

## Product Details

- **Material:** Plastic
- **Brand:** 3M
- **Item Thickness:** 0.75 Mils
- **Recommended Uses For Product:** Insulating indoor windows to save energy, reduce heating costs, and prevent frost buildup
- **Product Dimensions:** 6.4L x 1.58W Meters

## Images

![3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6) - Image 1](https://m.media-amazon.com/images/I/818LKTgh1zL.jpg)
![3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6) - Image 2](https://m.media-amazon.com/images/I/81nZBsNgncL.jpg)
![3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6) - Image 3](https://m.media-amazon.com/images/I/5170GQGCItL.jpg)
![3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6) - Image 4](https://m.media-amazon.com/images/I/51VpP3HgV3L.jpg)
![3M Indoor Window Insulation, Insulator Kit for 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6) - Image 5](https://m.media-amazon.com/images/I/61VlTGUSPLL.jpg)

## Available Options

This product comes in different **Size, Style Name** 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 5 Windows 3ft x 5ft, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2141W-6)
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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-22*