---
product_id: 267152119
title: "3M 2144W-6 Indoor, Heat or Cold Insulation for Large Windows and Sliding, 1-Door Kit, 7 9.3 Film, Fits 6 8 in x 9 ft Patio Door, Clear"
brand: "3m"
price: "¥7120"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/267152119-3m-2144w-6-indoor-heat-or-cold-insulation-for-large
store_origin: JP
region: Japan
---

# Saves energy, cuts heating costs Clearest window film available Reduces frost & condensation 3M 2144W-6 Indoor, Heat or Cold Insulation for Large Windows and Sliding, 1-Door Kit, 7 9.3 Film, Fits 6 8 in x 9 ft Patio Door, Clear

**Brand:** 3m
**Price:** ¥7120
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay warm, save smart, and see clearly all season long!

## Quick Answers

- **What is this?** 3M 2144W-6 Indoor, Heat or Cold Insulation for Large Windows and Sliding, 1-Door Kit, 7 9.3 Film, Fits 6 8 in x 9 ft Patio Door, Clear by 3m
- **How much does it cost?** ¥7120 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/267152119-3m-2144w-6-indoor-heat-or-cold-insulation-for-large)

## 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

- • **Frost-Free Living:** Say goodbye to annoying condensation and frost build-up for a cozy, clear window all season.
- • **Energy-Smart Shield:** Slash your heating bills by sealing in warmth with advanced heat shrink technology.
- • **All-Season Durability:** Designed to last all winter long, maintaining comfort and clarity through every chill.
- • **Crystal Clear Comfort:** Experience the clearest window film that keeps your view pristine and your space stylishly insulated.
- • **Effortless Installation:** Quick, no-fuss setup with Scotch Window Film Mounting Tape—stay warm without the hassle.

## Overview

The 3M 2144W-6 Indoor Window Insulator Kit fits large patio doors up to 6'8" x 9' with a crystal-clear 7 ft x 9.3 ft film. It reduces heat loss, condensation, and frost build-up using heat shrink film and Scotch mounting tape for easy, durable installation—perfect for energy-conscious professionals seeking comfort without compromising style.

## 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. Quick and easy installation. 3M window kits stay up all season long with Scotch tape technology. Clearest window film available.

## Features

- Clearest window film available
- Save energy and reduce heating costs
- Reduces condensation and prevents frost build-up

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | 3M |
| UPC | 716080021957 051141381114 720698818267 051131501256 |
| Part number | 2144 |
| Item Weight | 204 g |
| Product Dimensions | 27.94 x 27.43 x 26.67 cm; 204.12 g |
| Item model number | 2144W-6 |
| Size | Patio Door |
| Color | Clear |
| Style | Indoor |
| Pattern | Insulator Kit |
| Item Package Quantity | 1 |
| Coverage | 7 ft. x 9.3 ft |
| Included components | Patio door insulate kit |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Plastic
- **Brand:** 3M
- **Recommended uses for product:** Thermal insulation, moisture protection (inside)
- **Product dimensions:** 25L x 25W millimeters
- **Global Trade Identification Number:** 00051131501256

## Images

![3M 2144W-6 Indoor, Heat or Cold Insulation for Large Windows and Sliding, 1-Door Kit, 7 9.3 Film, Fits 6 8 in x 9 ft Patio Door, Clear - Image 1](https://m.media-amazon.com/images/I/61Kfp8dSXFL.jpg)

## Available Options

This product comes in different **Size Name, 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 Patio Door Insulation, Insulator Kit for 6'-8" x 9' ft Patio Door, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2144W-6)
- Frost King V73/9H Indoor Shrink Window Kit 42 62-Inch, Clear, 9-Pack
- 3m Window Kit 84" X 237"Film

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-18*