---
product_id: 326765340
title: "Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust"
brand: "ac infinity"
price: "R$632"
currency: BRL
in_stock: true
category: "Ac Infinity"
url: https://www.desertcart.com.br/products/326765340-flexible-4-inch-aluminum-ducting-heavy-duty-four-layer-protection
store_origin: BR
region: Brazil
---

# 25 ft length for versatile setups Flexible steel-wire spiral for easy install 4-layer heavy-duty leak & tear resistance Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

**Brand:** ac infinity
**Price:** R$632
**Availability:** ✅ In Stock

## Summary

> 🌀 Elevate your airflow game with ducting that bends, lasts, and performs like a pro.

## Quick Answers

- **What is this?** Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust by ac infinity
- **How much does it cost?** R$632 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/326765340-flexible-4-inch-aluminum-ducting-heavy-duty-four-layer-protection)

## Best For

- ac infinity enthusiasts

## Why This Product

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

## Key Features

- • **Premium Materials:** Crafted from fire-resistant dual aluminum foil and protective PVC thermoplastic for safety and longevity.
- • **Complete Kit Ready:** Includes two stainless steel 4" duct clamps for secure, professional-grade connections out of the box.
- • **Custom Fit Every Time:** Easily cut to length for tailored HVAC, grow room, or exhaust applications—no compromises.
- • **Flexible Installation:** Steel-wire spiral core bends effortlessly, perfect for tight, hard-to-reach ventilation spaces.
- • **Durability Meets Design:** Four-layer construction ensures unmatched resistance to leaks, tears, and cuts—built to last where others fail.

## Overview

The AC Infinity Flexible 4-Inch Aluminum Ducting is a 25-foot long, heavy-duty ventilation solution featuring a four-layer design with fire-resistant aluminum foil and protective PVC thermoplastic. Its steel-wire spiral core offers superior flexibility for easy installation in tight spaces. Designed for HVAC, grow rooms, dryers, and exhaust systems, it includes two stainless steel clamps for secure fitting, ensuring durable, leak-resistant airflow management.

## Description

Buy AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

## Features

- Designed for ventilation applications including HVAC, dryer, grow rooms and tents.
- Four layer design makes it more durable and resistant to leaks, tears, and cuts.
- Steel-wire spiral structure is flexible and easy-to-install in hard to reach places.
- Constructed of Aluminum and thermoplastic, tube can be shortened for various applications.
- Ducting Size: 4” | Length: 25 feet | Includes two stainless steel 4" duct clamps

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071LHCFZ8 |
| Best Sellers Rank | #31,597 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #42 in Heating & Cooling Ducting Products |
| Brand | AC Infinity |
| Brand Name | AC Infinity |
| Color | Black |
| Colour | Black |
| Country of Publication | China |
| Customer Reviews | 4.6 out of 5 stars 5,932 Reviews |
| Item Dimensions L x W | 7.62L x 0.1W Meters |
| Item Length | 300 Inches |
| Item Weight | 0.01 Ounces |
| Item height | 0.1 centimeters |
| Item weight | 0.01 Ounces |
| Manufacturer | AC Infinity |
| Material | Stainless Steel Aluminum |
| Material Type | Stainless Steel Aluminum |
| Maximum Pressure | 4 Bars |
| Maximum pressure | 4 Bars |
| Nominal Wall Thickness | Greater than single-layer thickness inches |
| Number of Flutes | 1 |
| Outside Diameter | 4 Inches |
| Product dimensions | 7.62L x 0.1W Meters |
| UPC | 854759004952 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** AC Infinity
- **Colour:** Black
- **Item weight:** 0.01 Ounces
- **Material:** Stainless Steel Aluminum
- **Product dimensions:** 7.62L x 0.1W Meters

## Images

![Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust - Image 1](https://m.media-amazon.com/images/I/61gDYGO1+EL.jpg)

## Questions & Answers

**Q: It seems like the bad reviews are about size and come from march of 2020. Did you switch manufacturing or something? If so had it been resolved yet?**
A: The problem was, it just said it was 4" in diameter, but did not point out that the 4" were outside diameter. The product itself is probably good. I needed an air vent hose with 4" inside diameter, so it can go over a pipe with 4".  I wonder why somebody would be interested in the outside diameter for these hoses anyway. 
I ended up buying a non insulated hose at Home Depot, where I could take my own tape measure to see with my own eyes what I am buying.

**Q: Has anyone else noticed that none of these are actually 25ft in length?**
A: I had to send mine back, because of the diameter was not what I needed. There was some confusion, I had thought it would fit on a 4" connection, but it did not. So, I bought something else at a local store, where I could physically measure the ID.

**Q: Can this be used as an hvac supply duct?  (heating and ac)**
A: If it can be used for a dryer vent, it CAN be used for HVAC , the dryer produces more heat that a home furnace.

**Q: Come in white??**
A: Hi there, 

Thank you for reaching out to us!

I'm sorry but we do not have these available in a white option. 

Kind regards, 

Kenny Ngo
AC Infinity

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**Shop now:** [https://www.desertcart.com.br/products/326765340-flexible-4-inch-aluminum-ducting-heavy-duty-four-layer-protection](https://www.desertcart.com.br/products/326765340-flexible-4-inch-aluminum-ducting-heavy-duty-four-layer-protection)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-28*