---
product_id: 276130942
title: "Frost King THERMWELL PRODUCTS SP55/6 Foil & Fiberglass Duct SP55 Fiberglass Pipe Insulation, 12\" x 15', Silver"
brand: "frost king"
price: "$421.05"
currency: USD
in_stock: true
reviews_count: 5
category: "Frost King"
url: https://www.desertcart.us/products/276130942-frost-king-thermwell-products-sp55-6-foil-and-fiberglass-duct
store_origin: US
region: United States of America
---

# 15 feet length covers extensive pipe runs Dual-layer foil & fiberglass for max insulation R-Value 4.3 for superior thermal efficiency Frost King THERMWELL PRODUCTS SP55/6 Foil & Fiberglass Duct SP55 Fiberglass Pipe Insulation, 12" x 15', Silver

**Brand:** frost king
**Price:** $421.05
**Availability:** ✅ In Stock

## Summary

> 🔥 Wrap it right, save it tight! Insulate like a pro 🛡️

## Quick Answers

- **What is this?** Frost King THERMWELL PRODUCTS SP55/6 Foil & Fiberglass Duct SP55 Fiberglass Pipe Insulation, 12" x 15', Silver by frost king
- **How much does it cost?** $421.05 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/276130942-frost-king-thermwell-products-sp55-6-foil-and-fiberglass-duct)

## Best For

- frost king enthusiasts

## Why This Product

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

## Key Features

- • **Extended Coverage:** 15-foot roll wraps more pipes in one go—less hassle, more efficiency
- • **Dual-Defense Design:** Foil meets fiberglass for unbeatable heat retention and vibration reduction
- • **Thermal Shield Power:** R-4.3 rating slashes energy loss and cuts costs
- • **Pro-Grade Flexibility:** Easily wired or taped in place for a secure, custom fit every time
- • **Versatile Application:** Perfect for HVAC, auto hoods, ducts, and trunks—upgrade your entire system

## Overview

Frost King’s SP55/6 Foil & Fiberglass Duct Insulation combines a high R-value of 4.3 with a 15-foot length roll, delivering professional-grade thermal protection and vibration reduction. Designed for heating and cooling pipes, ducts, and automotive applications, this dual-material insulation ensures energy efficiency and durability, making it a top choice for savvy homeowners and contractors alike.

## Description

Frost King, Fiberglass and Foil Duct Insulation. 4.3 R-Value reduces vibration. Product can be wired or taped securely in place. Use on heating and cooling pipes, ducts, auto hoods and trucks. Measurements are 12-Inch x 2-Inch x 15-Feet.

Review: Isolation pour tuyau de hotte - L'espace est restreint. Tape métalique comme pour sécheuse. chaleur.
Review: THE Best Product On The Market For HVAC Duck Insulating - This is a terrific product that does just exactly what it was designed to do! I used it to wrap the HVAC supply runs in my older home and what a difference it has made! Very easy to work with. But just like any project, make sure you know what you are doing. Long sleeves, light gloves, a hat and even a face mask helps because the insulator in this product is fiberglass and it can shed in the installation process. That is to be expected. I think you would be very hard put to find a better product for it's intended use.

## Features

- Combines two insulating materials into one roll
- Package Weight : 3 lbs
- Package Dimensions: 19.5 L x 14.3 H x 28.8 W (")
- Country of Origin: China

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000LNNHBU |
| Best Sellers Rank | #145,715 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #75 in Pipe Insulation |
| Brand | Frost King |
| Brand Name | Frost King |
| Country of Publication | USA |
| Coverage | 30 sq ft coverage with an R-4.3 value |
| Customer Reviews | 4.3 out of 5 stars 302 Reviews |
| Global Trade Identification Number | 00077578022956 |
| Included Components | Thermwell foil wrap |
| Item Dimensions L x W | 4.57L x 0.31W Meters |
| Item Thickness | 5.08 Centimeters |
| Item Type Name | Frost King SP55 Fiberglass Pipe Insulation, 12" x 15' |
| Item Weight | 907 g |
| Item thickness | 5.08 Centimeters |
| Manufacturer | THERMWELL PRODUCTS |
| Manufacturer Part Number | SP55/6 |
| Material | Fiberglass |
| Material Type | Fiberglass |
| Model Number | SP55/6 |
| Product dimensions | 4.57L x 0.31W Meters |
| Recommended Uses For Product | Insulation of heating and cooling pipes, ducts, auto hoods, and trunks |
| Recommended uses for product | Insulation of heating and cooling pipes, ducts, auto hoods, and trunks |
| UPC | 077578022956 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Frost King
- **Item thickness:** 5.08 Centimeters
- **Material:** Fiberglass
- **Product dimensions:** 4.57L x 0.31W Meters
- **Recommended uses for product:** Insulation of heating and cooling pipes, ducts, auto hoods, and trunks

## Images

![Frost King THERMWELL PRODUCTS SP55/6 Foil & Fiberglass Duct SP55 Fiberglass Pipe Insulation, 12" x 15', Silver - Image 1](https://m.media-amazon.com/images/I/61bLJyATZ7L.jpg)

## Questions & Answers

**Q: If I want to use it to wrap heat/air duct pipes up in the attic, should the aluminum side be on the inside or outside?**
A: Should be on outside.  The shiny surface has two functions:  If heating season, the shiny surface has less heat radiation into the attic than any other surface color.  When cooling, that shiny surface reflects -reduces the absorption - of heat radiation.

**Q: Want to insulate the kitchen fan exhaust pipe; is this an appropriate product for that use?  If not, what should I use?**
A: This would work using aluminum foil tape for the seams.

**Q: How many sheets?**
A: This is a roll of insulation 12 inches wide -- 15 foot long and 2 inches thick, there may be sheets of material in the 2 inches but I never counted them -- it is just 2 inches total thickness

**Q: Can this be used to wrap an aluminum dryer vent tube to prevent condensation on the outside of the tube during the winter?**
A: I used it to insult my bathroom fan duct running through the attic. I had a problem with condensation dripping down into the bathroom. This fixed the problem.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Isolation pour tuyau de hotte
*by M***E on 13 February 2023*

L'espace est restreint. Tape métalique comme pour sécheuse. chaleur.

### ⭐⭐⭐⭐⭐ THE Best Product On The Market For HVAC Duck Insulating
*by T***M on 27 June 2020*

This is a terrific product that does just exactly what it was designed to do! I used it to wrap the HVAC supply runs in my older home and what a difference it has made! Very easy to work with. But just like any project, make sure you know what you are doing. Long sleeves, light gloves, a hat and even a face mask helps because the insulator in this product is fiberglass and it can shed in the installation process. That is to be expected. I think you would be very hard put to find a better product for it's intended use.

### ⭐⭐⭐⭐⭐ Much needed insulation
*by M***T on 9 June 2020*

Worked good for covering duct work around vent boots

## Frequently Bought Together

- Thermwell Products 12"X15' Fbg Insulation Sp55 Pipe Insulation
- 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
- ETERART Aluminum Foil Duct Tape Heavy Duty,High Temperature Sealing and Patching,Perfect for HVAC,Air Ducts,Metal Repair,Foamboard,Insulation,Dryer Vent and More,2 Inches x 20 Yards,Silver

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-23*