---
product_id: 33573132
title: "5x4 Single Wall Galvanized Metal Duct Reducer / Increaser 5\" to 4\" / 4\" x 5\" HVAC, Heating, Cooling, Venting, Flue Duct, Exhaust piping, Fresh Air, Stove, 240 CFM, Contractors, Building Supplies"
brand: "dynamic lakewood"
price: "£18.65"
currency: GBP
in_stock: false
reviews_count: 1
url: https://www.desertcart.co.uk/products/33573132-5x4-single-wall-galvanized-metal-duct-reducer-increaser-5-to
store_origin: GB
region: United Kingdom
---

# 5" to 4" transition 240 CFM airflow Durable galvanized metal 5x4 Single Wall Galvanized Metal Duct Reducer / Increaser 5" to 4" / 4" x 5" HVAC, Heating, Cooling, Venting, Flue Duct, Exhaust piping, Fresh Air, Stove, 240 CFM, Contractors, Building Supplies

**Brand:** dynamic lakewood
**Price:** £18.65
**Availability:** ❌ Out of Stock

## Summary

> 🔄 Transform Your Ducting Game!

## Quick Answers

- **What is this?** 5x4 Single Wall Galvanized Metal Duct Reducer / Increaser 5" to 4" / 4" x 5" HVAC, Heating, Cooling, Venting, Flue Duct, Exhaust piping, Fresh Air, Stove, 240 CFM, Contractors, Building Supplies by dynamic lakewood
- **How much does it cost?** £18.65 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/33573132-5x4-single-wall-galvanized-metal-duct-reducer-increaser-5-to)

## Best For

- dynamic lakewood enthusiasts

## Why This Product

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

## Key Features

- • **Lightweight Design:** Weighing only 9.1 ounces, easy to handle and install.
- • **Contractor Approved:** Trusted by professionals for reliable performance in building supplies.
- • **Robust Construction:** Crafted from high-quality galvanized metal for unmatched durability.
- • **Seamless Transition:** Effortlessly connect 5" to 4" ducts for optimal airflow.
- • **Versatile Applications:** Perfect for HVAC, heating, cooling, and flue venting needs.

## Overview

The 5x4 Single Wall Galvanized Metal Duct Reducer/Increaser is a high-quality, durable solution for transitioning between duct sizes. Designed for HVAC, heating, cooling, and flue venting applications, this lightweight yet robust component ensures efficient airflow with a capacity of 240 CFM. Ideal for contractors and DIY enthusiasts alike, it’s a must-have for any ventilation project.

## Description

The Dynamic 5 in. x 4 in. Round Reducer is made of galvanized steel. It is used to transition from a 5 in. pipe to a 4 in. pipe in an HVAC system. It features hemmed collar edges for strength and a snug fit. This round reducer is suitable for most HVAC applications. Made of galvanized steel Used to transition from a 5 in. pipe to a 4 in. pipe in an HVAC system Always seal seams with building code-approved sealant or duct tape (not included) Always insulate duct-work for greater system efficiency and comfort (insulation not included) Hemmed collar edges for a snug fit and increased strength Single Wall Galvanized Metal reducer for Duct / pipe reducing. Great for professionals and Home owners. Metal is is easy to drill with Self Drilling Screws.

Review: Four Stars - Good price, great delivery

## Features

- High Quality. Non Crimped Ends
- Galvanized Metal for Longer Lasting Quality
- Galvanized pipe to be used for gas heating, ventilation and air conditioning, Flue Venting
- Can be used for solid fuel venting.
- For single wall pipe.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Dynamic Lakewood |
| Part Number | Dynamic5x4 |
| Item Weight | 9.1 ounces |
| Package Dimensions | 5.1 x 4.9 x 3.8 inches |
| Item model number | Dynamic5x4 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![5x4 Single Wall Galvanized Metal Duct Reducer / Increaser 5" to 4" / 4" x 5" HVAC, Heating, Cooling, Venting, Flue Duct, Exhaust piping, Fresh Air, Stove, 240 CFM, Contractors, Building Supplies - Image 1](https://m.media-amazon.com/images/I/416NKDys4xL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Four Stars
*by G***C on October 27, 2016*

Good price, great delivery

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**Shop now:** [https://www.desertcart.co.uk/products/33573132-5x4-single-wall-galvanized-metal-duct-reducer-increaser-5-to](https://www.desertcart.co.uk/products/33573132-5x4-single-wall-galvanized-metal-duct-reducer-increaser-5-to)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-20*