---
product_id: 332858682
title: "Vent Systems 4\" Inch White Straight Inline Duct Coupler – Male-Fit Plastic Ventilation Pipe Fitting for Heating, Cooling & Exhaust Systems – Durable HVAC Straight Pipe Joiner – Indoor Use"
brand: "vent systems"
price: "¥3251"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/332858682-vent-systems-4-inch-white-straight-inline-duct-coupler-male
store_origin: JP
region: Japan
---

# Quick push-fit install 4-inch precision fit ABS plastic durability Vent Systems 4" Inch White Straight Inline Duct Coupler – Male-Fit Plastic Ventilation Pipe Fitting for Heating, Cooling & Exhaust Systems – Durable HVAC Straight Pipe Joiner – Indoor Use

**Brand:** vent systems
**Price:** ¥3251
**Availability:** ✅ In Stock

## Summary

> ⚙️ Connect with Confidence: The Ultimate 4" Vent Coupler for Next-Level Airflow

## Quick Answers

- **What is this?** Vent Systems 4" Inch White Straight Inline Duct Coupler – Male-Fit Plastic Ventilation Pipe Fitting for Heating, Cooling & Exhaust Systems – Durable HVAC Straight Pipe Joiner – Indoor Use by vent systems
- **How much does it cost?** ¥3251 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/332858682-vent-systems-4-inch-white-straight-inline-duct-coupler-male)

## Best For

- vent systems enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Lightweight:** Slim 2.36 x 3.94-inch profile weighing just 1.41 ounces—perfect for DIY pros and trade experts alike.
- • **Durable ABS Construction:** Crafted from high-quality Acrylonitrile Butadiene Styrene for long-lasting strength and resistance to wear.
- • **Effortless Push-Fit Design:** Install in seconds without hassle—just push and secure with clamps or reinforced tape.
- • **Seamless 4-Inch Integration:** Perfectly engineered for all standard 4-inch HVAC pipes, ensuring a flawless connection every time.
- • **Versatile Vent Compatibility:** Ideal for extractor fans, kitchen hoods, bathroom vents, and both indoor/outdoor HVAC systems.

## Overview

The Vent Systems 4" Inch In-line Air Vent Duct Coupler is a precision-engineered ABS plastic connector designed for seamless integration with standard 4-inch HVAC pipes. Lightweight yet durable, it offers quick push-fit installation and versatile compatibility with various ventilation systems, making it an essential upgrade for both residential and commercial air circulation projects.

## Description

Full description not available

## Features

- Made of High Quality ABS Plastic and perfectly designed for DIY and Trade
- In-line Duct Connector - Easily fit with different 4" inch plastic or flexible pipes for HVAC.
- Easy to install - Push-fit chosen flexible or straight plastic duct on the coupler and fix with steel clamps or reinforced alu-tape.
- Perfectly suited Duct Flange to Connect your Extractor Fan, Bathroom fan, Kitchen exhaust Fan, In-line Extract fan and Cooker hood or any other indoor outdoor heating cooling pipe.
- Vent Systems 4 inch (100mm) products are made to be used for home improvement, office improvement. They are portable, high quality and long durability.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Size | 4 Inch - Male Fit |
| Material | Acrylonitrile Butadiene Styrene |
| Brand | Vent Systems |
| Color | White |
| Item dimensions L x W x H | 2.36 x 3.94 x 3.94 inches |
| Connector Type | Flange |
| Thread Size | 4 inch |
| Thread Type | NPT |
| Number of Pieces | 1 |
| Manufacturer | Vent Systems |
| Item Weight | 1.41 ounces |
| Product Dimensions | 2.36 x 3.94 x 3.94 inches |
| Country of Origin | Latvia |
| Shape | Circular |
| Item Package Quantity | 1 |
| Number Of Basins | 1 |
| Special Features | Easy to Install |
| Usage | Commercial/Residential |
| Included Components | Male Fit Connector |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Size:** 4 Inch - Male Fit
- **Material:** Acrylonitrile Butadiene Styrene
- **Brand:** Vent Systems
- **Color:** White
- **Item dimensions L x W x H:** 2.36 x 3.94 x 3.94 inches
- **Connector Type:** Flange
- **Thread Size:** 4 inch
- **Thread Type:** NPT
- **Number of Pieces:** 1
- **Manufacturer:** Vent Systems

## Images

![Vent Systems 4" Inch White Straight Inline Duct Coupler – Male-Fit Plastic Ventilation Pipe Fitting for Heating, Cooling & Exhaust Systems – Durable HVAC Straight Pipe Joiner – Indoor Use - Image 1](https://m.media-amazon.com/images/I/71DB7GQnTYS.jpg)

## Available Options

This product comes in different **Size Name, Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Inexpensive solution to backdraft.
*by G***D on April 17, 2025*

Inexpensive. Works well with a 70cfm bathroom fan. The damper included with bathroom fan was garbage. This stops 99% of the backdraft.BTW do not use this on dryer vents. It will plug up with lint and trip the high limit thermal fuse in your dryer. A 7 dollar part that’ll cost you 150-250 dollars to have replaced. Also I would be concerned about the temperature rating of the plastic. It would certainly deform from the heat of the dryer becoming useless.Unit does not have any directional arrows. You have to know what you’re doing to make this work. Horizontal or upflow applications only.

### ⭐⭐⭐⭐⭐ 4" diameter is accurate
*by E***E on April 30, 2025*

As described and the 4" measurement fit dryer vent hoses I wanted to join. The plastic walls of the item could have been thicker & therefore stronger, but for now it works.

### ⭐⭐⭐⭐ Received as scheduled
*by J***A on January 9, 2023*

Received as advertised and as scheduled, very light duty with damper blade falling out while installing.

## Frequently Bought Together

- Vent Systems 4" Inch - in-line Air Vent Duct Coupler for 4 inch Pipe. Straight Inline Ventilation Pipe Plastic Ducting Connector for Cooling Heating Ventilation System HVAC 100 mm
- 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.jp/products/332858682-vent-systems-4-inch-white-straight-inline-duct-coupler-male](https://www.desertcart.jp/products/332858682-vent-systems-4-inch-white-straight-inline-duct-coupler-male)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-26*