---
product_id: 549929350
title: "4\" Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25' Feet Long"
brand: "hvac premium"
price: "€ 504.68"
currency: EUR
in_stock: false
reviews_count: 5
category: "Hvac Premium"
url: https://www.desertcart.com.cy/products/549929350-4-inch-aluminum-hose-flexible-insulated-r-4-2-air
store_origin: CY
region: Cyprus
---

# 25 ft length for extended duct runs R-4.2 insulation value for energy savings 4" diameter for versatile HVAC fit 4" Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25' Feet Long

**Brand:** hvac premium
**Price:** € 504.68
**Availability:** ❌ Out of Stock

## Summary

> 💨 Flex your airflow with the duct that means business!

## Quick Answers

- **What is this?** 4" Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25' Feet Long by hvac premium
- **How much does it cost?** € 504.68 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/549929350-4-inch-aluminum-hose-flexible-insulated-r-4-2-air)

## Best For

- hvac premium enthusiasts

## Why This Product

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

## Key Features

- • **Ready-to-Install Kit:** Includes 2 clamps for quick, secure setup—get your system running faster with confidence.
- • **Premium Aluminum Build:** Durable dual-layer aluminum housing ensures long-lasting performance and superior insulation.
- • **Hygienic Airflow Design:** Smooth metalized PET inner core reduces pressure loss and prevents fiberglass erosion for cleaner air.
- • **Energy-Smart R-4.2 Rating:** Thick fiberglass insulation minimizes heat loss, cutting energy costs and boosting HVAC efficiency.
- • **Kink-Resistant Flexibility:** Engineered to hold shape through sharp bends without kinking, maintaining optimal airflow.

## Overview

This 4-inch diameter, 25-foot long flexible aluminum duct features a high-quality dual aluminum layer and R-4.2 fiberglass insulation for superior energy efficiency. Designed to resist kinks and maintain full diameter through bends, it ensures hygienic, low-pressure-loss airflow. Compliant with ASTM and European standards, it’s the professional’s choice for reliable HVAC ductwork.

## Description

This aluminum flex duct is intended to be used in heating, cooling, ventilation, and waste gases transmission lines. Suitable for medium-pressure applications. It has an outer surface made of high-quality aluminum foil and an inner surface made of metalized PET with inside high-tensile spring steel wire. Great emphasis has been invested in the design of this product to prevent it from kinking in sharp bends & turns and to hold steady and at full diameter in all applications. All steel wire is applied between PET surfaces to prevent corrosion (oxidization). Produced in accordance with ISO 9001-2008 Quality Management System. Complies with industry standards of USA: ASTM D-882. European: EN 10270-1-SM. & EN 13180 standards. By means of the smooth surface, which the interior PET provides, this flex duct decreases the pressure loss and provides a more hygienic environment.

Review: It is on par with anything from a big box store....same quality level. Its an empty flexible tube...so yeah...it does well. the material is on par with the industry.
Review: Need to duct an overhead oven vent fan through a bunch of floor joist on a long overhead run. Easy to work with.

## Features

- High Quality: Aluminum Housing On the Outside and on the Inside For The Best Insulation Value
- Air-tight Inner Core Decreases The Pressure Loss and Provides A More Hygienic Environment- High Energy Efficient / No fiberglass erosion into air stream.
- Thick Blanket of Fiberglass Insulation: Which Gives You A R-Value of 4.2
- Tough Reinforced Metallized Polyester Jacket - Tear and puncture resistant - Air-tight Inner Core - No fiberglass erosion into air stream.
- Designed To withhold Bends And Sharp Turns Without Kinking
- 2 Clamps included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078HS3NL3 |
| Generic Name | Flexible Duct |
| Item Dimensions LxWxH | 7.62 x 0.1 Meters |
| Item Weight | 2 kg 840 g |
| Item model number | 4SFLX |
| Manufacturer | HVAC Premium |
| Net Quantity | 1.0 Count |
| Product Dimensions | 762 x 10.16 x 0.1 cm; 2.83 kg |
| UPC | 810116310159 635133967632 |

## Product Details

- **Brand:** HVAC Premium
- **Item Thickness:** 4 Inches
- **Material:** Aluminium
- **Product Dimensions:** 7.62L x 0.1W Meters
- **Recommended Uses For Product:** Ventilation, heating, and cooling systems with medium pressure applications

## Images

![4" Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25' Feet Long - Image 1](https://m.media-amazon.com/images/I/71Vt+SFX-eL.jpg)
![4" Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25' Feet Long - Image 2](https://m.media-amazon.com/images/I/71uvwMesa0L.jpg)
![4" Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25' Feet Long - Image 3](https://m.media-amazon.com/images/I/710NNz+SV9L.jpg)
![4" Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25' Feet Long - Image 4](https://m.media-amazon.com/images/I/71gahP+qlpL.jpg)
![4" Inch Aluminum Hose Flexible Insulated R-4.2 Air Duct Pipe for Rigid HVAC Flex Ductowrk Insulation - 25' Feet Long - Image 5](https://m.media-amazon.com/images/I/61htbzVmJhL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by N***Y on 12 October 2025*

It is on par with anything from a big box store....same quality level. Its an empty flexible tube...so yeah...it does well. the material is on par with the industry.

### ⭐⭐⭐⭐⭐ Review
*by L***N on 20 February 2025*

Need to duct an overhead oven vent fan through a bunch of floor joist on a long overhead run. Easy to work with.

### ⭐⭐⭐⭐⭐ Review
*by J***Y on 9 June 2025*

Good quality, easy to work with. Replaced old duct that mice chewed into, hopefully this is more of a barrier.

## Frequently Bought Together

- HVAC Premium 3" Inch Aluminum Hose Flexible Air Duct Pipe for Rigid HVAC Flex Ductwork - 25' Feet Long
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---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-17*