---
product_id: 476730112
title: "Dunzy Duct Reducer 6 to 4 Inch Ducting Connector Duct Adapter Air Ducting Reducer Increaser Round Air Duct Reducer Galvanized Steel Air Duct Adapter for Bathroom Kitchen Inline Ventilation (2 Pcs)"
brand: "dunzy"
price: "¥8051"
currency: JPY
in_stock: true
reviews_count: 7
category: "Dunzy"
url: https://www.desertcart.jp/products/476730112-dunzy-duct-reducer-6-to-4-inch-ducting-connector-duct
store_origin: JP
region: Japan
---

# 6" to 4" diameter for seamless duct connection 2-pack for versatile multi-use setups Galvanized steel for rust-proof durability Dunzy Duct Reducer 6 to 4 Inch Ducting Connector Duct Adapter Air Ducting Reducer Increaser Round Air Duct Reducer Galvanized Steel Air Duct Adapter for Bathroom Kitchen Inline Ventilation (2 Pcs)

**Brand:** dunzy
**Price:** ¥8051
**Availability:** ✅ In Stock

## Summary

> 🔧 Seamless airflow, zero compromises — connect like a pro!

## Quick Answers

- **What is this?** Dunzy Duct Reducer 6 to 4 Inch Ducting Connector Duct Adapter Air Ducting Reducer Increaser Round Air Duct Reducer Galvanized Steel Air Duct Adapter for Bathroom Kitchen Inline Ventilation (2 Pcs) by dunzy
- **How much does it cost?** ¥8051 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/476730112-dunzy-duct-reducer-6-to-4-inch-ducting-connector-duct)

## Best For

- dunzy enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Installation:** Simple slip-in design compatible with glue, tape, or clips for quick setup.
- • **Perfect Fit, Zero Hassle:** Precisely sized 6" to 4" reducer ensures airtight, seamless duct transitions.
- • **Versatility Meets Efficiency:** Ideal for HVAC, bathroom fans, range hoods, hydroponics, and more—upgrade your airflow game.
- • **Built to Last, Engineered to Perform:** Premium galvanized steel resists rust and deformation for long-term reliability.
- • **Double the Value, Double the Flexibility:** Includes two reducers to cover multiple ventilation needs or backups.

## Overview

The Dunzy Duct Reducer is a durable, galvanized steel connector designed to seamlessly join 6-inch and 4-inch ducts. Sold in a convenient 2-pack, it offers rust resistance, easy installation, and versatile use across HVAC, kitchen, and bathroom ventilation systems, ensuring efficient airflow and professional-grade performance.

## Description

Features: The air duct adapter is designed to paired with exhaust fans and dust collectors for bathroom exhaust fans, HVAC systems, inline ventilators, range hoods, tumble dryers, hydroponics, kitchens and so on. The galvanized sheet metal ducting connector is sturdy and smooth, not easy to fray or break, easily forming a seamless ventilation system duct. Specifications: Material: galvanized steel Color: silver Size: Diameters at each end: 6 inches and 4 inches Height: approx. 4.6 inches Package includes: 2 X 6 Inch to 4 inch duct reducer increasers Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.

Review: Works great - Could not find this type of reducer at big box stores With a little metal tape works great
Review: Well built accurate reducer - This piece is well made and fits into the assembly as expected.

## Features

- Quality and Sturdy Material: the 6 inch to 4 inch duct reducer is made of quality galvanized steel material, which is not easy to rust and corrosion, no burrs or nicks, and not easy to deform or break, providing a good ventilation effect
- What You Will Get: the package contains 2 pieces of 6 to 4 inch duct reducers in silver color, sufficient quantity to meet your daily needs and replacements
- Size Information: the diameters at each end are 6 inches and 4 inches, and the height of the air ducting reducer is approx. 4.6 inches, so that 6 inches and 4 inches solid or flexible ducts can be connected together to form a seamless ventilation system duct
- Simple to Install: the 6 to 4 inch air duct adapter is easy to use, just put it in both ducting, and you can use glue, tape or steel clip to secure connections, simple and convenient
- Versatile Applications: the duct reducer increaser can be applied to be paired with exhaust fans and dust collectors for bathroom exhaust fans, HVAC systems, inline ventilators, range hoods, tumble dryers, hydroponics, kitchens, etc., also suitable for other types of exhaust system

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B8D6PBYP |
| Batteries Required? | No |
| Best Sellers Rank | #157,157 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #348 in HVAC Ducting |
| Customer Reviews | 4.2 4.2 out of 5 stars (55) |
| Date First Available | August 2, 2022 |
| Item Weight | 1.21 pounds |
| Manufacturer | Dunzy |
| Product Dimensions | 5.99 x 4.6 x 4.01 inches |
| Size | 6 to 4 Inch |

## Images

![Dunzy Duct Reducer 6 to 4 Inch Ducting Connector Duct Adapter Air Ducting Reducer Increaser Round Air Duct Reducer Galvanized Steel Air Duct Adapter for Bathroom Kitchen Inline Ventilation (2 Pcs) - Image 1](https://m.media-amazon.com/images/I/31ttF8f0tAL.jpg)
![Dunzy Duct Reducer 6 to 4 Inch Ducting Connector Duct Adapter Air Ducting Reducer Increaser Round Air Duct Reducer Galvanized Steel Air Duct Adapter for Bathroom Kitchen Inline Ventilation (2 Pcs) - Image 2](https://m.media-amazon.com/images/I/417KT+GKWPL.jpg)
![Dunzy Duct Reducer 6 to 4 Inch Ducting Connector Duct Adapter Air Ducting Reducer Increaser Round Air Duct Reducer Galvanized Steel Air Duct Adapter for Bathroom Kitchen Inline Ventilation (2 Pcs) - Image 3](https://m.media-amazon.com/images/I/419yppN3f2L.jpg)
![Dunzy Duct Reducer 6 to 4 Inch Ducting Connector Duct Adapter Air Ducting Reducer Increaser Round Air Duct Reducer Galvanized Steel Air Duct Adapter for Bathroom Kitchen Inline Ventilation (2 Pcs) - Image 4](https://m.media-amazon.com/images/I/41SrJv6KQIL.jpg)
![Dunzy Duct Reducer 6 to 4 Inch Ducting Connector Duct Adapter Air Ducting Reducer Increaser Round Air Duct Reducer Galvanized Steel Air Duct Adapter for Bathroom Kitchen Inline Ventilation (2 Pcs) - Image 5](https://m.media-amazon.com/images/I/41T3YWz-JhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by A***R on April 16, 2025*

Could not find this type of reducer at big box stores With a little metal tape works great

### ⭐⭐⭐⭐⭐ Well built accurate reducer
*by C***E on October 18, 2024*

This piece is well made and fits into the assembly as expected.

### ⭐⭐⭐⭐⭐ Sheet metal reducer
*by Y***G on May 7, 2024*

Strong and good quality . Fit perfectly !

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-01*