---
product_id: 261804257
title: "AC43H Air Conditioner Weatherseal Tape, 2-1/4 Inch, 2-1/4\" W, 2-1/4\" T, 42\" L, Dark Gray"
brand: "thermwell"
price: "$45.01"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/261804257-ac43h-air-conditioner-weatherseal-tape-2-1-4-inch-2
store_origin: US
region: United States of America
---

# Open cell foam blocks air, dust & insects 42-inch length covers large window AC gaps 2.25-inch thick foam for superior sealing AC43H Air Conditioner Weatherseal Tape, 2-1/4 Inch, 2-1/4" W, 2-1/4" T, 42" L, Dark Gray

**Brand:** thermwell
**Price:** $45.01
**Availability:** ✅ In Stock

## Summary

> ❄️ Seal the chill, not your style!

## Quick Answers

- **What is this?** AC43H Air Conditioner Weatherseal Tape, 2-1/4 Inch, 2-1/4" W, 2-1/4" T, 42" L, Dark Gray by thermwell
- **How much does it cost?** $45.01 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/261804257-ac43h-air-conditioner-weatherseal-tape-2-1-4-inch-2)

## Best For

- thermwell enthusiasts

## Why This Product

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

## Key Features

- • **Energy Smart:** Blocks drafts to boost AC efficiency and lower energy bills
- • **Seal Like a Pro:** Compressible foam ensures airtight, insect-proof weatherstripping
- • **Easy Installation:** Flexible strip adapts seamlessly to window contours for quick setup
- • **Durable & Resilient:** Open cell foam maintains shape and performance season after season
- • **Perfect Fit Dimensions:** 2-1/4" x 2-1/4" x 42" size tailored for window AC units

## Overview

The Frost King AC43H Weatherseal Tape is a 2.25-inch thick, 42-inch long open cell foam strip designed specifically for window air conditioners. It provides a resilient, compressible barrier that effectively seals out air, dust, and insects, enhancing energy efficiency and indoor comfort.

## Description

2-1/4" x 2-1/4" x 42", Dark Gray, Open Cell Foam Tape, For Weather-Stripping Around Window Air Conditioners, A Resilient, Compressible Strip For Sealing Out Air, Insects & Dust.Do not use it on paint or wallpaper.

## Features

- For Weather-Stripping Around Window Air Conditioners
- Resilient, Compressible Strip For Sealing Out Air, Insects & Dust
- Open Cell Foam Tape

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B0000DH4JL |
| Best Sellers Rank | #66,953 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #527 in Weather Stripping |
| Brand Name | Thermwell |
| Color | Gray |
| Customer Reviews | 5.0 5.0 out of 5 stars (1) 5.0 out of 5 stars |
| Global Trade Identification Number | 00077578030401 |
| Included Components | Foam Insulation |
| Item Dimensions L X W | 106.7L x 5.7W centimeters |
| Item Thickness | 2.25 Inches |
| Item Type Name | Frost King AC43H Air Conditioner Weatherseal Tape, 2-1/4 by 2-1/4 by 42-Inch |
| Item Weight | 0.01 Ounces |
| Manufacturer | Thermwell Products Co., Inc |
| Manufacturer Part Number | AC43H |
| Material Type | Foam |
| Model Number | AC43H |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Recommended Uses For Product | Window |
| Unit Count | 3.5 Feet |
| Upc | 077578030401 |

## Product Details

- **Brand:** Thermwell
- **Colour:** Gray
- **Item thickness:** 2.25 Inches
- **Material:** Foam
- **Product dimensions:** 106.7L x 5.7W centimeters

## Images

![AC43H Air Conditioner Weatherseal Tape, 2-1/4 Inch, 2-1/4" W, 2-1/4" T, 42" L, Dark Gray - Image 1](https://m.media-amazon.com/images/I/81dtEN7daQL.jpg)

## Available Options

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

## Questions & Answers

**Q: can the weatherseal go between the bottom of the air conditioner and the window sill?)**
A: If there is space then yes. It’s a foam so you can manipulate it into the smallest crevices.

**Q: does it absorb moisture?**
A: Never had to experience moisture

**Q: What is the maximum temperature rating of this foam?**
A: Sorry, no idea. I use it for insulation. It does not come with temperature ratings listed,  but as it's very light, thick sponge rubber I wouldn't think it would withstand very high heat.

**Q: Is it washable?**
A: It can be hand-washed in mild soapy water' rinsed and air-dried as long as the foam has not gotten crumbly with age.

## Frequently Bought Together

- THERMWELL Frost King AC43H Air Conditioner Weatherseal Tape, 2-1/4 by 2-1/4 by 42-Inch
- Frigidaire 6,000 BTU Window Air Conditioner with Remote Control, Cools Up to 250 Sq. Ft., Quiet Operation, Eco Mode, 3 Fan Speeds, Auto Restart, White
- Breeze Stop Surround Insulation Side Panels White for Window AC Unit Indoor Air Conditioner Cover for Winter and Summer

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-20*