---
product_id: 59608266
title: "neverest® RK 5 inch Backdraft Shutter 125mm Ducting Round Connector Galvanized Steel with Rubber Sealing Fits Only with Metal Ducts"
brand: "neverest"
price: "$73.41"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/59608266-neverest-rk-5-inch-backdraft-shutter-125mm-ducting-round-connector
store_origin: US
region: United States of America
---

# Automatic backdraft shutter with stainless steel springs Rubber sealing ensures 100% quiet, airtight closure Galvanized steel housing for ultimate durability neverest® RK 5 inch Backdraft Shutter 125mm Ducting Round Connector Galvanized Steel with Rubber Sealing Fits Only with Metal Ducts

**Brand:** neverest
**Price:** $73.41
**Availability:** ✅ In Stock

## Summary

> 🌬️ Seal the deal on perfect airflow—because your space deserves the best!

## Quick Answers

- **What is this?** neverest® RK 5 inch Backdraft Shutter 125mm Ducting Round Connector Galvanized Steel with Rubber Sealing Fits Only with Metal Ducts by neverest
- **How much does it cost?** $73.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/59608266-neverest-rk-5-inch-backdraft-shutter-125mm-ducting-round-connector)

## Best For

- neverest enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Robust galvanized steel and aluminum blades engineered for decades of reliable ventilation.
- • **Versatile Fit:** Designed exclusively for metal ducts with a perfect 125mm diameter fit, compatible with all common round ventilation pipes.
- • **Smart Airflow Control:** Automatic backdraft shutter prevents unwanted drafts, optimizing your indoor climate effortlessly.
- • **Pro-Grade Installation:** Ideal for HVAC, whole-house ventilation, and heat recovery systems—trusted by experts for over 40 years.
- • **Whisper-Quiet Operation:** Rubber sealing and precision springs guarantee silent closing—no more noisy ducts.

## Overview

The neverest® RK 5 inch Backdraft Shutter is a premium galvanized steel duct connector with aluminum damper blades and rubber sealing. It features automatic closing via stainless steel springs to block unwanted airflow, ensuring quiet and efficient ventilation. Designed exclusively for 125mm metal ducts, it’s perfect for HVAC, whole-house ventilation, and heat recovery systems, backed by over 40 years of ventilation expertise.

## Description

Full description not available

## Features

- EXCELLENT QUALITY The neverest RK 5" ducting connector with backdraft shutter is very robust and durable. The housing is made of galvanized steel and the damper blades are made of aluminum. Two stainless steel springs are for automatic closing while the rubber ring ensures 100% closure and quiet closing.
- PRODUCT FUNCTION The backflow damper blocks the cold and warm air from entering through the ventilation duct. The flaps open when the extractor fan blows out the exhaust air and automatically close as soon as the airflow stops. The flaps must be aligned horizontally in order to close optimally.
- MULTIPLE USE This backdraft damper can also be used in whole-house ventilation, passive ventilation, air conditioning hose connector, vent connector, HVAC and Heat Recovery Systems. Fits all common round ventilation pipes and 125mm flexible ducting according to DIN EN 1506.
- PERFECT CHOICE Designed for long-lasting ventilation systems ideal for home improvement. Can be used to join multiple lengths of pipe together to form a long duct run or connect directly to a ventilator.
- NOTE This is to be installed in metal ducts only. Measure the diameter of your duct before purchasing. We are experts in ventilation for more than 40 years. If you have any questions or complaints, please contact our customer service directly. Your request will be processed immediately.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | neverest |
| Part Number | 40545030039031 |
| Product Dimensions | 8.8 x 12.5 x 12.5 cm; 136.08 g |
| Item model number | 4054503005310 |
| Size | DN 125 |
| Colour | Silver |
| Material | Alloy Steel, Rubber |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 136 g |

## Product Details

- **Size:** DN 125
- **Material:** Alloy Steel, Rubber
- **Brand:** neverest
- **Colour:** Silver
- **Item dimensions L x W x H:** 8.8 x 12.5 x 12.5 centimetres
- **Connector type:** Reducer
- **Thread size:** 125 millimeters
- **Exterior finish:** Aluminium
- **Thread type:** UN
- **Item weight:** 0.3 Pounds

## Images

![neverest® RK 5 inch Backdraft Shutter 125mm Ducting Round Connector Galvanized Steel with Rubber Sealing Fits Only with Metal Ducts - Image 1](https://m.media-amazon.com/images/I/61R-zDPpQKL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-21*