---
product_id: 68406084
title: "Fernco P1056-43 4 3-Inch Stock Coupling 1056-43 Flex 4X3 No Metal, 120 V, Black, 4 x 3 Inch"
brand: "fernco"
price: "€ 6.29"
currency: EUR
in_stock: true
url: https://www.desertcart.fr/products/68406084-fernco-p1056-43-4-3-inch-stock-coupling-1056-43
store_origin: FR
region: France
---

# 120V rated for safety 4x3 inch flexible coupling Durable elastomeric PVC, no metal Fernco P1056-43 4 3-Inch Stock Coupling 1056-43 Flex 4X3 No Metal, 120 V, Black, 4 x 3 Inch

**Brand:** fernco
**Price:** € 6.29
**Availability:** ✅ In Stock

## Summary

> 🔧 Connect with confidence — the flexible future of pipe coupling!

## Quick Answers

- **What is this?** Fernco P1056-43 4 3-Inch Stock Coupling 1056-43 Flex 4X3 No Metal, 120 V, Black, 4 x 3 Inch by fernco
- **How much does it cost?** € 6.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/68406084-fernco-p1056-43-4-3-inch-stock-coupling-1056-43)

## Best For

- fernco enthusiasts

## Why This Product

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

## Key Features

- • **Voltage-Ready Design:** Rated for 120V applications, adding an extra layer of safety and reliability.
- • **Compact & Lightweight:** Weighs just 404g with a sleek black finish for discreet installation.
- • **Trusted Brand Quality:** Fernco’s industry-leading craftsmanship guarantees performance you can count on.
- • **Metal-Free Flexibility:** Elastomeric PVC ensures corrosion resistance and long-lasting durability.
- • **Seamless Pipe Connection:** Effortlessly links 4-inch to 3-inch pipes with precision fit.

## Overview

The Fernco 1056-43 is a 4x3 inch flexible, metal-free pipe coupling made from durable elastomeric PVC. Rated for 120 volts, it offers a corrosion-resistant, lightweight solution for securely connecting pipes, backed by Fernco’s trusted quality standards.

## Description

Fernco 1056-43 Coupling Flex 4X3 No Metal

## Features

- Brand: Fernco
- Part Number: 1056-43
- Coupling Flex 4X3 No Metal
- Stock coupling
- Use to connect any two pipes
- 4.46-Inch x 3.52-Inch x 4.03-Inch

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Fernco Inc. |
| Part Number | 1056-43 |
| Product Dimensions | 23.55 x 23.55 x 15.21 cm; 403.7 g |
| Item model number | 1056-43 |
| Size | 4 x 3 Inch |
| Colour | Black |
| Material | Elastomeric PVC Stainless Steel |
| Voltage | 120 Volts |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Measurement System | inch |
| Certification | Use to connect any two pipes |
| Included Components | Fernco 1056-43 Coupling Flex 4X3 No Metal |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 404 g |

## Product Details

- **Size:** 4 x 3 Inch
- **Material:** Elastomeric PVC Stainless Steel
- **Brand:** Fernco
- **Colour:** Black
- **Item dimensions L x W x H:** 23.5 x 23.5 x 15.2 centimetres
- **Connector type:** Reducer
- **Thread size:** 4 inch
- **Exterior finish:** Black
- **Thread type:** NPTF
- **Item weight:** 0.89 Pounds

## Images

![Fernco P1056-43 4 3-Inch Stock Coupling 1056-43 Flex 4X3 No Metal, 120 V, Black, 4 x 3 Inch - Image 1](https://m.media-amazon.com/images/I/51IMEdr8iPL.jpg)
![Fernco P1056-43 4 3-Inch Stock Coupling 1056-43 Flex 4X3 No Metal, 120 V, Black, 4 x 3 Inch - Image 2](https://m.media-amazon.com/images/I/511Qidt5UAL.jpg)
![Fernco P1056-43 4 3-Inch Stock Coupling 1056-43 Flex 4X3 No Metal, 120 V, Black, 4 x 3 Inch - Image 3](https://m.media-amazon.com/images/I/5117AMzFOAL.jpg)
![Fernco P1056-43 4 3-Inch Stock Coupling 1056-43 Flex 4X3 No Metal, 120 V, Black, 4 x 3 Inch - Image 4](https://m.media-amazon.com/images/I/71HrQGnXorL.jpg)
![Fernco P1056-43 4 3-Inch Stock Coupling 1056-43 Flex 4X3 No Metal, 120 V, Black, 4 x 3 Inch - Image 5](https://m.media-amazon.com/images/I/71qmfHp69ZL.jpg)

## Questions & Answers

**Q: I have 3.25" pvc installed for a radon system.  Will this sleeve work or do I need to get a 4" x 4"?**
A: 3.52-Inch is the smaller side of this Fernco.  So it will fit your pipe.  However the other side of this Fernco is 4 ", and would work if your fitting it to a 4 inch pipe or other fixture.  I bought these Fernco 4x3 to join my Radon pipe to my radon inline fan. The fan was 4" on the inlet and the exhaust side.  Two Fernco couplings to complete one job.

**Q: Can someone please tell me what the outside dimensions on both sides are? I'm needing it for a different kind of project than pipe fitting.**
A: My coupling is already installed on the radon fan device, but I tried to take the O.D. measurements of the coupling for you; the 3" side measures 4.05" OD. The 4" side was more difficult to measure exactly with my calipers, but I measured it as 5" OD. I hope this helps you, but if your use requires dead accurate measurements, I would contact the manufacturer directly.

**Q: How flexible is the material? I have a 3.5 x 5.00 and am woondering if it will be flexible enough to stretch over the 5" end.**
A: I went into my garage and looked at one waiting for a project.  The large end measured 4 and a quarter inches inside diameter.  I loosened the band clamp on that end a lot and tried to stretch it.  It did flex some for me.  I think you may possibly be able to stretch it to 5 but not more.  The wall thickness of the rubber is about 3/8 inch so it won't stretch easily.  Using some Vaseline or other lube might help it go on.  I have not tried it on a 5 inch O.D. pipe.

**Q: will this fit over 4 inch pvc pipe**
A: It should fit the 4" PVC pipe, as that is what it is made for. I used it to connect to a 4" O.D. radon fan outlet to a 3" O.D. PVC pipe and it fit both fine. As another user commented, you can use Vaseline or a silicon lubricant on it if the fit is a little tight. Mine went on very easily with no lubricant and had to be tightened with the clamp.

## Frequently Bought Together

- Fernco 1056-43 Coupling Flex 4X3 No Metal
- RadonAway 23029-1 RP140 Radon Mitigation Fan, 4",White
- XYF Air Easy Read Manometer | U-Tube Air Pressure Indicator (Blue)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-23*