---
product_id: 430313868
title: "Repa Market 8\" to 4\" Inch Duct Reducer/Increaser – Galvanized Steel Vent Pipe Adapter HVAC & Dryer Vent Systems – Round Metal Coupling Connector for Exhaust Fans, Bathroom Ventilation, Kitchen Hoods"
brand: "repa market"
price: "VT17539"
currency: VUV
in_stock: true
reviews_count: 13
url: https://www.desertcart.vu/products/430313868-repa-market-8-to-4-inch-duct-reducer-increaser-galvanized
store_origin: VU
region: Vanuatu
---

# Versatile Use Sturdy Steel Easy to Install Repa Market 8" to 4" Inch Duct Reducer/Increaser – Galvanized Steel Vent Pipe Adapter HVAC & Dryer Vent Systems – Round Metal Coupling Connector for Exhaust Fans, Bathroom Ventilation, Kitchen Hoods

**Brand:** repa market
**Price:** VT17539
**Availability:** ✅ In Stock

## Summary

> 🔄 Ducting Made Easy: Connect, Reduce, and Conquer!

## Quick Answers

- **What is this?** Repa Market 8" to 4" Inch Duct Reducer/Increaser – Galvanized Steel Vent Pipe Adapter HVAC & Dryer Vent Systems – Round Metal Coupling Connector for Exhaust Fans, Bathroom Ventilation, Kitchen Hoods by repa market
- **How much does it cost?** VT17539 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/430313868-repa-market-8-to-4-inch-duct-reducer-increaser-galvanized)

## Best For

- repa market enthusiasts

## Why This Product

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

## Key Features

- • **DIY Friendly:** Ideal for both professionals and home improvement enthusiasts.
- • **Built to Last:** Crafted from robust galvanized steel for durability in any environment.
- • **Compact Design:** Space-saving dimensions fit effortlessly into any installation.
- • **Transform Your Space:** Seamlessly connect ducts of varying sizes for optimal airflow.
- • **Versatile Applications:** Perfect for HVAC systems, kitchen hoods, and hydroponics setups.

## Overview

The 8" to 4" Inch Duct Reducer is a high-quality galvanized steel fitting designed for versatile use in both residential and commercial settings. With a robust construction and easy installation, it connects different duct sizes efficiently, making it perfect for HVAC systems, extractor fans, and more.

## Description

Repa Market 8" to 4" Inch Male Fit Round Duct Reducer - Galvanized Steel Pipe Coupler/Increaser - Coupling for Round Duct Ventilation Systems - HVAC Heating/Cooling

## Features

- 200mm Male to 100mm Male Round Ducting Adaptor. 8" (7.87") to 4" (3.93")
- Can be used with HVAC systems, bathroom extractor fans, inline ventilators, cooker hoods, tumble dryers, hydroponics, kitchens or, anywhere else in the apartment, home or office space.
- Sturdy Steel ducting is perfect for DIY and Trade use.
- This is a very practical robust, all in one, solid duct reducer or increaser which can be used when connecting two different, solid or flexible ducts or ducts to ventilators, or vice versa, from small to large, larger to small.
- Perfectly suited for ducting your Tumble Dryer, Bathroom or Any type of extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Size | 4 to 8 Inch / 100 to 200 mm |
| Material | Metal |
| Brand | Repa Market |
| Item dimensions L x W x H | 7.98 x 7.98 x 5.34 inches |
| Connector Type | Reducer |
| Exterior Finish | Alloy Steel |
| Number of Pieces | 1 |
| Manufacturer | Repa Market |
| Item Weight | 9.9 ounces |
| Product Dimensions | 7.98 x 7.98 x 5.34 inches |
| Country of Origin | Latvia |
| Style | Reducer/Increaser |
| Finish | Galvanized Steel |
| Shape | Circular |
| Item Package Quantity | 1 |
| Special Features | Easy to Install |
| Usage | Commercial/Residential |
| Included Components | Galvanized Steel Reducer/Increaser |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Repa Market 8" to 4" Inch Duct Reducer/Increaser – Galvanized Steel Vent Pipe Adapter HVAC & Dryer Vent Systems – Round Metal Coupling Connector for Exhaust Fans, Bathroom Ventilation, Kitchen Hoods - Image 1](https://m.media-amazon.com/images/I/81qzSV3WW8L.jpg)

## Available Options

This product comes in different **Material Type, Size** options.

## Questions & Answers

**Q: will this work for a bathroom fan duct that I need to decrease from 4" - 3" to fit in an eave vent? some people say that the reducer is the same size**
A: It may work in an eave vent. I used it right off the ceiling vent fan.  The exhaust duct on the old  fan was 3 inch and the fan vent opening on the new fan was 4 inch. Aluminum taped inside and outside, then double wrapped the ducting. As strong as the reducer is, it would be difficult to reduce the length

**Q: What's the temperature rating on this reducer?**
A: Its galvanized steel! Unless you r looking for industrial stuff, the temp rate must be way above what you need; if you looking for industrial, steer clear!

**Q: Can you clamp this to a 4 inch dryer vent? not the hose side**
A: You need a duct splitter probably.. I don't really know what you're trying
to do

**Q: Will this work for a portable electric dryer?**
A: I used it to vent a free-standing a/c unit. I did not have a window and drilled a hole in the wall and used this to vent it. I would think it would work for your dryer.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    It works!
  

*by M***N on Reviewed in the United States on March 8, 2024*

I use this fitting for part of my dust collector with aluminum tape. It works great. it doesn’t fit on the dust collector but with the tape it’s a pretty solid connection.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great roaster hood
  

*by F***2 on Reviewed in the United States on March 13, 2024*

Got a coffee roaster. I roast dark, so there's 'some' smoke. This makes a great hood. Catches the smoke, but doesn't cool the roaster.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    worked for what I needed it for
  

*by C***D on Reviewed in the United States on February 28, 2024*

since I could not find a funnel of this size, this item did a really good job for me

## Frequently Bought Together

- 8" to 4" Inch / 200 to 100 mm Round Galvanized Steel Duct Reducer - Duct Fitting - Pipe Increaser Reducer - Metal Tube Reducing Coupling for Drain, Waste and Ventilation (8 to 4 Inch)
- RENKE - Pack of 4 Large Adjustable 304 Stainless Steel Hose Clamps (91-114mm) for HVAC, Passive Vents, and Air Conditioning Systems,Hose Clips,Hose clamp,Pipe Clips,Hose Clamps,Large Clamps

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**Shop now:** [https://www.desertcart.vu/products/430313868-repa-market-8-to-4-inch-duct-reducer-increaser-galvanized](https://www.desertcart.vu/products/430313868-repa-market-8-to-4-inch-duct-reducer-increaser-galvanized)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-20*