---
product_id: 208505038
title: "Repa Market 6\" 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: "281 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Repa Market"
url: https://www.desertcart.ro/products/208505038-repa-market-6-to-4-inch-duct-reducer-increaser-galvanized
store_origin: RO
region: Romania
---

# Precise 3.89" to 5.86" fit Push-fit easy installation Heavy-duty galvanized steel Repa Market 6" 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:** 281 Lei
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your airflow with precision and durability – don’t get left behind!

## Quick Answers

- **What is this?** Repa Market 6" 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?** 281 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/208505038-repa-market-6-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

- • **Dual Functionality:** Works as both reducer and increaser to adapt any ventilation setup effortlessly.
- • **Perfect Fit Every Time:** Engineered with exact 3.89" to 5.86" diameters for seamless duct transitions.
- • **DIY Friendly, Pro Approved:** Simple push-fit design ensures quick, secure installation without hassle.
- • **Built to Brave the Elements:** Galvanized steel construction resists rust, moisture, and corrosion for lasting durability.
- • **Versatile Ventilation Solution:** Ideal for HVAC, bathroom fans, kitchen hoods, and dryer vent systems—upgrade your airflow game.

## Overview

The Repa Market 6" to 4" Duct Reducer/Increaser is a galvanized steel vent pipe adapter designed for HVAC, dryer vents, and exhaust systems. With precise dimensions, corrosion-resistant material, and easy push-fit installation, it ensures a secure, efficient airflow transition for residential and commercial ventilation needs.

## Description

Repa Market 6" 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 - desertcart.com

Review: Size matters - Great if you want to lose some inches. Size matters here
Review: It works! - 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.

## Features

- PRECISE MEASUREMENTS – Small end outer diameter: 3.89" Inches; Widest end outer diameter: 5.86" Inches; Overall depth 4.33" Inches; Transition length in middle after connecting 1.93" Inches; fits solid or flexible ducting for HVAC dryer vents and exhaust fans.
- MATERIAL & DURABILITY – Heavy-duty galvanized steel resists rust, moisture, and corrosion; built to last for residential, commercial, and industrial ducting applications.
- FUNCTIONALITY & FEATURES – Works as a reducer or increaser; ensures secure fit for ventilation fans, dryer ducts, and exhaust vent pipes while maintaining high airflow efficiency.
- INSTALLATION & USE – Simple push-fit installation for quick DIY or professional projects; compatible with flexible dryer vent hose, rigid duct pipe, and inline duct fans.
- APPLICATION & BENEFIT – Perfect for HVAC tools and projects, bathroom extractor fans, kitchen range hoods, tumble dryers, and ventilation systems in homes, garages, and workshops.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B089NKL35L |
| Best Sellers Rank | #94,286 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #170 in HVAC Ducting |
| Brand | Repa Market |
| Brand Name | Repa Market |
| Color | Silver |
| Connector Type | Reducer |
| Customer Reviews | 4.6 out of 5 stars 1,042 Reviews |
| Exterior Finish | Alloy Steel |
| Included Components | Galvanized Steel Reducer/Increaser |
| Item Dimensions | 6.02 x 4.33 x 6.02 inches |
| Item dimensions L x W x H | 6.02 x 4.33 x 6.02 inches |
| Manufacturer | Repa Market |
| Material | Metal |
| Material Type | Metal |
| Number of Pieces | 1 |
| Size | 4 to 6 Inch / 100 to 150 mm |
| Thread Size | 6 inches |
| Thread Type | NPT |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Repa Market
- **Color:** Silver
- **Connector Type:** Reducer
- **Exterior Finish:** Alloy Steel
- **Item dimensions L x W x H:** 6.02 x 4.33 x 6.02 inches
- **Material:** Metal
- **Number of Pieces:** 1
- **Size:** 4 to 6 Inch / 100 to 150 mm
- **Thread Size:** 6 inches
- **Thread Type:** NPT

## Images

![Repa Market 6" 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/81oTKzTRG3L.jpg)
![Repa Market 6" 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 2](https://m.media-amazon.com/images/I/71-uMQpkL6L.jpg)
![Repa Market 6" 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 3](https://m.media-amazon.com/images/I/81w6YSILurL.jpg)
![Repa Market 6" 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 4](https://m.media-amazon.com/images/I/81TDxKDA4OL.jpg)
![Repa Market 6" 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 5](https://m.media-amazon.com/images/I/81XzMsqRdML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Size matters
*by D***N on December 19, 2025*

Great if you want to lose some inches. Size matters here

### ⭐⭐⭐⭐⭐ It works!
*by M***N 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.

### ⭐⭐⭐⭐⭐ quality reducer for exhaust use
*by J***. on June 15, 2024*

This thing is decently constructed, easy to work with and priced fairly. I used it to neck up from 3" to 4" ducting, reducing pressure in my bathroom exhaust system. Which allowed the pipe clamps to retain the ducting better. Would buy again.

## Frequently Bought Together

- Galvanized Steel 6 to 4 Inch Duct Reducer - Round Duct Fitting Pipe Increaser - Reducing Coupling
- EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp worm drive hose clamps (4Pcs, 91mm-114mm)
- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

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**Shop now:** [https://www.desertcart.ro/products/208505038-repa-market-6-to-4-inch-duct-reducer-increaser-galvanized](https://www.desertcart.ro/products/208505038-repa-market-6-to-4-inch-duct-reducer-increaser-galvanized)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-10-22*