---
product_id: 17828097
title: "Duct Insulation, 1-1/2In x 48In x 25Ft"
brand: "johns manville intl"
price: "E£ 18923"
currency: EGP
in_stock: false
reviews_count: 8
url: https://www.desertcart.com.eg/products/17828097-duct-insulation-1-1-2in-x-48in-x-25ft
store_origin: EG
region: Egypt
---

# 1.5-inch thickness for optimal insulation depth Wide temp range -32°F to 250°F for versatile use R-Value 4.2 for superior thermal defense Duct Insulation, 1-1/2In x 48In x 25Ft

**Brand:** johns manville intl
**Price:** E£ 18923
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Wrap your ducts in next-level efficiency and never look back!

## Quick Answers

- **What is this?** Duct Insulation, 1-1/2In x 48In x 25Ft by johns manville intl
- **How much does it cost?** E£ 18923 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/17828097-duct-insulation-1-1-2in-x-48in-x-25ft)

## Best For

- johns manville intl enthusiasts

## Why This Product

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

## Key Features

- • **Premium Thermal Shield:** R-Value 4.2 ensures your HVAC system stays energy-efficient and cost-effective.
- • **Robust Fiberglass Core:** Durable 3/4 lb density fiberglass offers long-lasting insulation performance.
- • **Easy-to-Install Wrap Design:** 48-inch wide, 25-foot length roll simplifies coverage and speeds up your project.
- • **Pro-Grade Foil Scrim Jacket:** Silver foil scrim kraft jacket resists moisture and enhances durability for extended lifespan.
- • **Versatile Temperature Tolerance:** Operates flawlessly from freezing -32°F to scorching 250°F environments.

## Overview

This 1.5-inch thick fiberglass duct insulation features a high R-Value of 4.2 and a durable foil scrim kraft jacket, designed to withstand temperatures from -32°F to 250°F. Measuring 48 inches wide and 25 feet long, it meets multiple ASTM and UL standards, ensuring professional-grade thermal protection and moisture resistance for HVAC systems.

## Description

' Duct Insulation, Wrap, Fiberglass Material of Construction, Foil Scrim Kraft Jacket Material, Color Silver, Thickness 1-1/2 In., Approx. R Factor 4.2, 3/4 lbs. Density, 48 In. Width, 25Ft Length, Temp. Range -32 to 250 F, Standards ASTM C-411, ASTM C-1104, ASTM C665, ASTM C-1338, ASTM E-84, UL723, NFPA 90A, CAN/ULC S102-1188, ASTM C1290, ASTM C553, ASTM C1136s '

Review: Quality duct insulation!! - Quality insulation!!
Review: Used to Re-insulate 15ft of 9" diameter air duct in attic space. Successful - Seemed like great deal. Used to repair duct work. Came in large box, Wide roll. 3M venture tape went over it and stuck to it well. Easy to cut with fresh razor blade. I would buy this again if the seller can't maintain this competitive price. Otherwise I will have to return to buying it local. Convenient to have desertcart deliver it at this competitive price.

## Features

- Price For: Each Material of Construction: Fiberglass Standards: ASTM C-411, ASTM C-1104, ASTM C665, ASTM C-1338, ASTM E-84, UL723, NFPA 90A, CAN/ULC S102-1188, ASTM C1290, ASTM C553, ASTM C1136s Item: Duct Insulation Thickness: 1-1/2" Color: Silver Jacket Material: Foil Scrim Kraft Type: Wrap Width: 48" Temp. Range: -32 to 250 F Density: 3/4 lbs. Approx. R Value: 4.2
- Length: 25' Country of Origin (subject to change): United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0099U4RM4 |
| Best Sellers Rank | #42,051 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #19 in Fiberglass Raw Materials |
| Customer Reviews | 4.6 4.6 out of 5 stars (178) |
| Date First Available | March 20, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Manufacturer | JOHNS MANVILLE |
| Manufacturer Part Number | 670378 |
| Material Type | Fiberglass |
| Product Dimensions | 16 x 15.2 x 48.7 inches |
| UPC | 696333272926 696334303353 |

## Product Details

- **Brand:** JOHNS MANVILLE INTL
- **Item Thickness:** 1.5 Inches
- **Material:** Fiberglass
- **Product Dimensions:** 300"L x 48"W
- **Recommended Uses For Product:** Thermal Insulation

## Images

![Duct Insulation, 1-1/2In x 48In x 25Ft - Image 1](https://m.media-amazon.com/images/I/71x229A574L.jpg)

## Questions & Answers

**Q: Can you provide a link with intallation instructions?**
A: Here are some instructions on this link....http://www.youtube.com/watch?v=nZv8nOIsNAs

**Q: Does the shiny side go next to the duct or should it be facing out?  Want to use it in crawl space to reduce condensation in vey humid North Carolina**
A: Yes, Shiny side out the side of the duct. It is called a heat shield to help the insulation preform better against condensation heat / Cooling losses.Any other questions feel free to check out Tinsmithmechanical.com

**Q: Can this be used on metal ductwork in the attic for AC in Florida?**
A: For attic ductwork in Florida I would recommend next grade up--2 inch thick.

**Q: When will you get more in?  it says there's only qty=1 in stock.    i need 4 rolls.**
A: Good day.
We have 5 items now.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality duct insulation!!
*by A***R on December 25, 2025*

Quality insulation!!

### ⭐⭐⭐⭐⭐ Used to Re-insulate 15ft of 9" diameter air duct in attic space. Successful
*by A***7 on October 31, 2025*

Seemed like great deal. Used to repair duct work. Came in large box, Wide roll. 3M venture tape went over it and stuck to it well. Easy to cut with fresh razor blade. I would buy this again if the seller can't maintain this competitive price. Otherwise I will have to return to buying it local. Convenient to have Amazon deliver it at this competitive price.

### ⭐⭐⭐⭐ Easy to work with, fantastic if R rating is correct
*by H***. on January 30, 2026*

Very easy to work with, no concerns just seems less extreme than the pink insulation

## Frequently Bought Together

- Duct Insulation, 1-1/2In x 48In x 25Ft
- TapePlus 2 Pack Professional Grade Aluminum Foil Tape - 2 Inch by 210 Feet (70 Yards) - Perfect for HVAC, Sealing & Patching Hot & Cold Air Ducts, Metal Repair, and Much More
- Aluminum Foil Tape, 2 inch x 65 Feet (3.9 mil), Insulation Adhesive Metal High Temperature Heavy Duty HVAC Tape, Silver for Ductwork, Dryer Vent, HVAC

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-02-28*