---
product_id: 390874129
title: "4\" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes"
brand: "fantronix"
price: "¥3125"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/390874129-4-100mm-round-air-vent-grille-cover-with-insect-mesh
store_origin: JP
region: Japan
---

# Fits Ø100mm ducts perfectly Built-in insect mesh protection Quick clip-in installation 4" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes

**Brand:** fantronix
**Price:** ¥3125
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate your airflow game with invisible, powerful ventilation!

## Quick Answers

- **What is this?** 4" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes by fantronix
- **How much does it cost?** ¥3125 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/390874129-4-100mm-round-air-vent-grille-cover-with-insect-mesh)

## Best For

- fantronix enthusiasts

## Why This Product

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

## Key Features

- • **Seamless 4" Fit:** Designed to clip effortlessly into standard 100mm round ducts for a flawless finish.
- • **Insect Mesh Shield:** Integrated fine mesh keeps pesky bugs out while maintaining smooth airflow.
- • **Dual Airflow Mastery:** Versatile for both supply and extract applications, optimizing your room’s air quality.
- • **UV-Protected Durability:** Crafted from UV-resistant ABS plastic to stay pristine and white, no yellowing over time.
- • **Effortless Airflow Control:** Adjust or lock the central cone to fine-tune ventilation and silence unwanted noise.

## Overview

The FANTRONIX 4" (100mm) Round Air Vent Grille Cover is a sleek, white ABS plastic ceiling diffuser designed for quick clip-in installation into standard 100mm round ducts. Featuring dual-purpose airflow for supply or extraction, it includes a built-in insect mesh and UV protection to prevent yellowing, making it ideal for bathrooms, kitchens, and ventilation systems requiring reliable, adjustable, and discreet air distribution.

## Description

4" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes

## Features

- White Circular ceiling diffuser. Clips in directly into Ø100 mm (4'') Round Pipe Ducting, Flexible Ducting or Ø100 mm 4 inch round sockets.
- Designed to cover wall or ceiling openings and ducting vents.
- Suitable for both ceiling supply and ceiling extract applications.
- Quick and easy installation - simple to fit. Supplied with insect mesh. UV protected to prevent yellowing over time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | FANTRONIX |
| Package Dimensions | 14.2 x 14 x 7 cm; 100 g |
| Size | 4" - 100 mm |
| Colour | White |
| Material | ABS |
| Installation method | Screw-In |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Special Features | Dual purpose outlet / inlet can be used to supply or extract air |
| Usage | air vent diffuser |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 100 g |

## Images

![4" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes - Image 1](https://m.media-amazon.com/images/I/61-lhcUWC3L.jpg)
![4" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes - Image 2](https://m.media-amazon.com/images/I/71P-GGtW-9L.jpg)
![4" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes - Image 3](https://m.media-amazon.com/images/I/81MwCfx7oPL.jpg)
![4" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes - Image 4](https://m.media-amazon.com/images/I/81fx76JolgL.jpg)
![4" (100mm) Round Air Vent Grille Cover with Insect Mesh – White Plastic Ceiling Diffuser for Ventilation & Ducting Pipes - Image 5](https://m.media-amazon.com/images/I/81GEyTeBdqL.jpg)

## Available Options

This product comes in different **Colour Name, Size name** options.

## Frequently Bought Together

- Fantronix 4 inch 100 mm Round Plastic Air Vent Grille Cover with Insect Anti-Fly mesh White Circular Ceiling Diffuser Small Inner Multi Cones for Ventilation Systems Exhaust Pipe
- Fantronix TUBE Extractor Fan Easy Operation With Light Switch and Run-on-Timer. Loft or attic, Dimensions: 246mm (L) x 190mm (H) x 167 mm (W), Spigot: 86mm Diameter for 100mm duct connection – White

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**Shop now:** [https://www.desertcart.jp/products/390874129-4-100mm-round-air-vent-grille-cover-with-insect-mesh](https://www.desertcart.jp/products/390874129-4-100mm-round-air-vent-grille-cover-with-insect-mesh)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-31*