---
product_id: 279917900
title: "Rn2 Radon Fan - 4.5\" Duct - 123 cfm"
price: "¥96788"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/279917900-rn2-radon-fan-4-5-duct-123-cfm
store_origin: JP
region: Japan
---

# Rn2 Radon Fan - 4.5" Duct - 123 cfm

**Price:** ¥96788
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Rn2 Radon Fan - 4.5" Duct - 123 cfm
- **How much does it cost?** ¥96788 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/279917900-rn2-radon-fan-4-5-duct-123-cfm)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Fantech Rn2 Radon Fan - 4.5" Duct - 123 cfm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F6ZYG3B |
| Air Flow Capacity | 220 Cubic Feet Per Minute |
| Best Sellers Rank | #165,210 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #500 in Household Ventilation Fans |
| Brand | FANTECH |
| Brand Name | FANTECH |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Customer Reviews | 4.4 out of 5 stars 541 Reviews |
| Global Trade Identification Number | 00650737890520 |
| Item Dimensions L x W x H | 13.25"L x 13.25"W x 11"H |
| Item Type Name | Radon Fan - 4.5" Duct - 123 cfm |
| Item Weight | 1 Pounds |
| Manufacturer | Fantech |
| Material Type | Engineered Plastic |
| Maximum Rotational Speed | 1500 RPM |
| Noise Level | 25 Decibels |
| Power Connector Type | 4-Pin |
| Product Dimensions | 13.25"L x 13.25"W x 11"H |
| UPC | 650737020903 650737890520 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Wattage | 58 watts |

## Product Details

- **Product Dimensions:** 13.25"L x 13.25"W x 11"H
- **Brand:** FANTECH
- **Voltage:** 12 Volts
- **Wattage:** 58 watts
- **Cooling Method:** Air
- **Noise Level:** 25 dB
- **Material:** Engineered Plastic
- **Maximum Rotational Speed:** 1500 RPM
- **Air Flow Capacity:** 220 Cubic Feet Per Minute
- **UPC:** 650737020903 650737890520

## Images

![Rn2 Radon Fan - 4.5" Duct - 123 cfm - Image 1](https://m.media-amazon.com/images/I/41GV26vj7US.jpg)

## Questions & Answers

**Q: Looking at "b 4.5".  current one is 4", to 3" pipes.  other reviews/questions + product title indicate this is 4".  is it 4" or 4.5"?**
A: Always think pipe dimensions (the ID of the pipe) when dealing with pipe.  The Rn2's top and bottom connections are 4.5" OD nominal which translates to 4" pipe. You use a 4x3 Flex Coupling with the Rn2 and 3" PVC pipe.  The PVC vent pipe is usually 3" which translates to 3.5" OD x 3" ID Schedule 40 PVC.

**Q: how many square feet of basement with a sump pump will this service**
A: Basing fan selection on square footage of a basement is not exact since air flows will vary based on many factors. But in most cases the RN2 should be fine up to about 2500 sq/ft. This is a 4" fan so using 4" pipe will give the best results.

**Q: Can this fan be on a switch and turned off when we are away?**
A: As a radon professional, most of the fan failures I've seen in 20 years are when fans have been off for a period.  Soil moisture coming out of the pipe and condensing on the metal parts (bearings) can ruin them.  They seem to be good for at least 15 years running continuously when properly installed.  If you have to shut it off, remove and store the fan and replace the space left by the fan with solid pipe so you don't have any other moisture issues.  Shut off switches located near these fans is an NEC safety code requirement.  Radon levels go right back up a few hours after turning a fan off and the converse is true.

**Q: The rn-1 is advertised on amazon as 90cfm. why does the sticker on my rn-1 say 130 cfm ?**
A: I don’t know. I have a rn-2 fan which is 130 cfm.

## Frequently Bought Together

- Fantech RN2 Radon Fan | 4 Inch | Quiet and Efficient Radon Mitigation | 220 Cfm White
- Power Cord Kit - 6 foot
- Fantech FRIK 2190-3 Radon Fan Install Kit Works with HP 2133 and HP 2190, 3"

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-21*