---
product_id: 785097508
title: "USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9\" x 4-1/2\" x 1-1/4\" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge"
brand: "girtech"
price: "96810 som"
currency: KGS
in_stock: false
reviews_count: 5
category: "Gi Rtech"
url: https://www.desertcart.kg/products/785097508-usm-4-heavy-duty-firebricks-4-pack-fireclay-chamotte-3000f
store_origin: KG
region: Kyrgyzstan
---

# Versatile for home heating units 3000°F max heat resistance Cuttable & customizable USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9" x 4-1/2" x 1-1/4" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge

**Brand:** girtech
**Price:** 96810 som
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Upgrade your hearth game with firebricks that bring the heat and the style!

## Quick Answers

- **What is this?** USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9" x 4-1/2" x 1-1/4" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge by girtech
- **How much does it cost?** 96810 som with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/785097508-usm-4-heavy-duty-firebricks-4-pack-fireclay-chamotte-3000f)

## Best For

- girtech enthusiasts

## Why This Product

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

## Key Features

- • **Long-Lasting Protection:** Protect your furnace lining and extend the life of your heating system with premium fireclay bricks.
- • **Unmatched Heat Endurance:** Withstand scorching temperatures up to 3000°F for ultimate durability.
- • **Precision Fit, Every Time:** Easily cut and shape bricks to perfectly line your fireplace or stove.
- • **Boost Your Heating Efficiency:** Enhanced thermal conductivity means faster, more even heat distribution.
- • **Versatile Home Heating Upgrade:** Ideal for fireplaces, wood stoves, pizza ovens, and more—upgrade your entire hearth.

## Overview

The USM-4 Heavy Duty Firebricks 4-Pack by GIRtech offers superior thermal conductivity and withstands extreme temperatures up to 3000°F. Designed for domestic heating units like fireplaces, wood stoves, and pizza ovens, these cuttable firebricks ensure precise fitting and long-lasting furnace protection. Packaged in sets of four, they are the perfect upgrade for efficient, durable, and customizable home heating solutions.

## Description

Firebrick GIRtech USM Сhamotte heavy duty firebrick with additives is designed for the construction and internal lining of domestic heating units. GIRtech USM – chamotte firebrick has improved thermal conductivity compared to traditional chamotte products. Firebrick can be used in any type of domestic heating units, such as brick fireplaces, steel furnaces, heating stoves, barbecues and barbecue complexes, ceramics kilns and blacksmith forge. It can be used both for arranging the hearth of the furnace and for lining the inner surface of the furnace. Refractory masonry must be done on a fireclay/alumina mortar, for example GIRtech CONTACT-40 or GIRtech CONTACT Drymix. Before performing work, it is necessary to moisten the contact surface with some water. It is not recommended to use cement mixes as a masonry mortar. GIRtech USM could be cutted or processed with a special tool if necessary. Firebricks are packed in branded cardboard boxes of 4 pieces

Review: These fire bricks work as advertised. Heat transmission from front to back is low. They can be 1000 degrees on one side and 200 degrees on the other. They come in foam cushingung so they do not break.
Review: Bien

## Features

- Enhanced Thermal Conductivity: GIRtech USM-4 fire bricks offer improved thermal conductivity compared to traditional chamotte products. Experience superior heat transfer and distribution, maximizing the efficiency of your heating units.
- High Refractoriness and Versatile Use: With a Maximum refractoriness of 3000 degrees Fahrenheit and service temperature 2760 degrees Fahrenheit, these fire bricks are suitable for various domestic heating units. Perfect for brick fireplaces, steel furnaces, heating stoves, barbecues, barbecue complexes, ceramics kilns, and blacksmith forges.
- Hearth Arrangement and Furnace Lining: Utilize these fire bricks for both arranging the hearth of the furnace and lining the inner surface. Ensure optimal insulation and protection for your heating unit, extending its lifespan and improving performance.
- Use with Alumina Mortar/Fireclay: Refractory masonry requires a fireclay/alumina mortar, such as GIRtech Ready Mix. Prior to installation, moisten the contact surface with water. Avoid using cement mixes as a masonry mortar.
- Cuttable and Processable: GIRtech USM fire bricks can be easily cut or processed with a special tool, allowing for customization and precise fitting as needed.
- Suitable for Domestic Use: These fire bricks are intended for domestic heating units and not for use in industrial units where contact with molten metals is possible. Ideal for enhancing the performance and efficiency of your home heating systems.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CXG3KRT5 |
| Country of Origin | USA |
| Generic Name | Heavy-Duty Thin Fire Bricks |
| Item Dimensions LxWxH | 32 x 229 x 114 Millimeters |
| Item Weight | 6 kg 900 g |
| Item model number | USM-4 |
| Manufacturer | ABC Manufactured Goods Inc |
| Net Quantity | 4.0 Count |

## Product Details

- **Brand:** GIRtech
- **Item Form:** Block
- **Item Weight:** 6.9 Kilograms
- **Material:** Fireclay
- **UPC:** 601958244845

## Images

![USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9" x 4-1/2" x 1-1/4" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge - Image 1](https://m.media-amazon.com/images/I/3120xFN0UVL.jpg)
![USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9" x 4-1/2" x 1-1/4" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge - Image 2](https://m.media-amazon.com/images/I/41k-wZWVCjL.jpg)
![USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9" x 4-1/2" x 1-1/4" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge - Image 3](https://m.media-amazon.com/images/I/41p3Bq5guPL.jpg)
![USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9" x 4-1/2" x 1-1/4" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge - Image 4](https://m.media-amazon.com/images/I/515f4HQ8NQL.jpg)
![USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9" x 4-1/2" x 1-1/4" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge - Image 5](https://m.media-amazon.com/images/I/51FElbc22ML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***N on 29 August 2025*

These fire bricks work as advertised. Heat transmission from front to back is low. They can be 1000 degrees on one side and 200 degrees on the other. They come in foam cushingung so they do not break.

### ⭐⭐⭐⭐⭐ Review
*by D***E on 11 January 2026*

Bien

### ⭐⭐⭐⭐⭐ Review
*by W***T on 29 July 2025*

Have been using these in my sauna stove. Great bricks. Highly recommend.

## Frequently Bought Together

- GIRtech USM-4 Heavy Duty Firebricks 4-Pack Fireclay, Chamotte 3000F US Stove 9" x 4-1/2" x 1-1/4" Insulating, Replacement Fire Bricks for Fireplaces, Wood Stoves, Pizza Ovens, Steel Furnaces, Forge
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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-26*