---
product_id: 293033168
title: "GroTheory 2 Pack Door Draft Stopper, Under Door Sweep for Exterior & Interior Doors, Weather Stripping Door Seal, Garage Window Blocker Noise Cold Air Insulation, Draft Guard Grey 2\" W x 39\" L"
brand: "grotheory"
price: "¥4341"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/293033168-grotheory-2-pack-door-draft-stopper-under-door-sweep-exterior
store_origin: JP
region: Japan
---

# Blocks drafts & saves energy Effective noise reduction Durable silicone build GroTheory 2 Pack Door Draft Stopper, Under Door Sweep for Exterior & Interior Doors, Weather Stripping Door Seal, Garage Window Blocker Noise Cold Air Insulation, Draft Guard Grey 2" W x 39" L

**Brand:** grotheory
**Price:** ¥4341
**Availability:** ✅ In Stock

## Summary

> 🚪 Seal the deal on comfort and savings!

## Quick Answers

- **What is this?** GroTheory 2 Pack Door Draft Stopper, Under Door Sweep for Exterior & Interior Doors, Weather Stripping Door Seal, Garage Window Blocker Noise Cold Air Insulation, Draft Guard Grey 2" W x 39" L by grotheory
- **How much does it cost?** ¥4341 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/293033168-grotheory-2-pack-door-draft-stopper-under-door-sweep-exterior)

## Best For

- grotheory enthusiasts

## Why This Product

- Trusted grotheory brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Quiet Comfort Zone:** Innovative door sweep design minimizes noise and dust intrusion for a peaceful, clean space.
- • **Energy-Smart Climate Control:** Seals gaps to prevent air leaks, boosting heating & cooling efficiency and cutting utility bills.
- • **Trusted Support & Durability:** Built to last with sturdy materials and backed by responsive after-sales service.
- • **Custom Fit, Effortless Install:** Easily cut to size and install on any door material—no glue needed, no mess.
- • **Ultimate Flexibility & Floor-Safe:** Silicone material bends easily without scratching floors, ensuring long-lasting protection.

## Overview

The GroTheory 2 Pack Door Draft Stopper features flexible, durable silicone construction designed to block drafts, reduce noise, and prevent dust entry. Measuring 2” W x 39” L, it’s easy to customize for any door, enhancing energy efficiency and indoor comfort while protecting floors. Ideal for year-round use, it’s a smart upgrade for any modern home.

## Description

Full description not available

## Features

- 【HIGH QUALITY MATERIALS】: Door Draft Stopper is made of silicone material, which can bend and deform. It is very flexible and will not damage your floor. The door stoppers for bottom of door is also very Sturdy and has a longer service life. Size: 2” W x 39” L
- 【NOISE REDUCTION】: Door sweep design is adopted to effectively reduce noise, prevent dust from entering through the door, and keep the room quiet and neat.
- 【SAVE MONEY AND ENERGY】: In winter and summer, draft stopper prevent the leakage of air conditioning and heating, make your room more efficient in cooling or heating, save electricity and money.
- 【EASY TO USE】: Strong than super glue and stripping for doors works on all materials, easy to cut. According to the size of the door, cut it to the right size.
- 【EXCELLENT AFTER-SALES】: If you have any questions about the Under Door Draft Stopper for bottom of door, please turn to us and let us know how to make it better. We will provide the best after-sales service.

## Product Details

- **Color:** Gray
- **Material:** Rubber
- **Brand:** GroTheory
- **Product Dimensions:** 39"L x 2"W x 2"Th
- **Maximum Gap Fill:** 99.1 Centimeters

## Images

![GroTheory 2 Pack Door Draft Stopper, Under Door Sweep for Exterior & Interior Doors, Weather Stripping Door Seal, Garage Window Blocker Noise Cold Air Insulation, Draft Guard Grey 2" W x 39" L - Image 1](https://m.media-amazon.com/images/I/81Z9lGRLPQL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great door draft stopper for indoor and outdoor use
*by G***Z on June 1, 2025*

I bought the Grotheory 2-Pack Door Draft Stoppers to block drafts, noise, and dust under my doors, and they work exactly as expected.Pros:Easy to install and fits most standard doorsEffectively blocks cold air, dust, and noise from coming inDurable material that holds up well over timeClean white color matches nicely with doorsCons:Might be a bit wide for very narrow door gaps, but usually no problemOverall, these door draft stoppers are an affordable and practical way to keep your home cozy and quieter. Definitely recommend!

### ⭐⭐⭐⭐⭐ The best!
*by I***P on June 25, 2025*

This is great! Keeps the cold air (AC in summer!) in the room by blocking the gap AND the adhesive grips SO well. I also noticed that the sound of the tv in the room is not as loud outside of the room so that is a bonus. I got it and put it right on. The instructions are clear and easy. I’ve tried other gap blocker strips and this is by far the easiest to install and works the best!

### ⭐⭐⭐⭐ Great for blocking light and reducing noise!
*by C***� on July 3, 2025*

We got this door stopper to help seal the gap between the door and the frame. There was a lot of light coming through, and we also get a ton of bird noise early in the morning from a tree outside our house. This product really helped! It completely blocks the light — not a sliver gets through. As for the noise, it doesn’t block it entirely, but I’d say it cuts it down by about 60–70%, which makes a big difference. Easy to install and does the job!

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**Shop now:** [https://www.desertcart.jp/products/293033168-grotheory-2-pack-door-draft-stopper-under-door-sweep-exterior](https://www.desertcart.jp/products/293033168-grotheory-2-pack-door-draft-stopper-under-door-sweep-exterior)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-18*