---
product_id: 9285975
title: "Fernco, 1056-64, Flexible Coupling, For Pipe Size 6\" x 4\""
brand: "fernco"
price: "€ 29.61"
currency: EUR
in_stock: true
reviews_count: 11
url: https://www.desertcart.ie/products/9285975-fernco-1056-64-flexible-coupling-for-pipe-size-6-x
store_origin: IE
region: Ireland
---

# Underground rated durability Fast, tool-friendly install Universal pipe compatibility Fernco, 1056-64, Flexible Coupling, For Pipe Size 6" x 4"

**Brand:** fernco
**Price:** € 29.61
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect with confidence—where flexibility meets durability!

## Quick Answers

- **What is this?** Fernco, 1056-64, Flexible Coupling, For Pipe Size 6" x 4" by fernco
- **How much does it cost?** € 29.61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/9285975-fernco-1056-64-flexible-coupling-for-pipe-size-6-x)

## 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

- • **Built for the Long Haul:** Underground rated for enduring performance in the toughest environments.
- • **Effortless Installation:** Secure your pipes in minutes with just a screwdriver or wrench—no hassle, no downtime.
- • **Trusted Industry Leader:** From 1964, Fernco’s proven quality means you’re investing in reliability and peace of mind.
- • **Versatile Compatibility:** Seamlessly connects cast iron, PVC, copper, lead, and steel pipes for ultimate flexibility.
- • **Reliable Seal Every Time:** Engineered to provide a positive, leak-proof seal that keeps your drainage system flawless.

## Overview

The Fernco 1056-64 Flexible Coupling is a high-quality, USA-made pipe connector designed for 6" x 4" pipes. It offers fast installation with common tools, a positive seal for vent, drain, sewer, and waste piping, and compatibility with multiple pipe materials including cast iron, PVC, copper, lead, and steel. Rated for underground use, this coupling ensures durable, leak-proof connections trusted by professionals since 1964.

## Description

Product Description Fernco 1056-64 6" x 4" Flexible Pipe Coupling (Connects Cast Iron, PVC, Steel or Lead) From the Manufacturer Established in 1964, Fernco is a global leader in manufacturing high-quality flexible pipe couplings, drainage, and plumbing systems. Renowned for exceptional performance and reliability, Fernco products are trusted by homeowners and professionals alike. With a commitment to innovation and dependability, Fernco has earned a strong reputation for delivering superior solutions. As a proud USA manufacturer, Fernco is dedicated to maintaining the highest standards of production and engineering.

Review: Work well, fit 4 inch pvc, great value - These 4”x6” runner boots work great. I am using them at the top inlets of a water harvesting system that utilizes 4 inch -pvc pipe schedule 40. The 4 inch end of the boot slips onto the pvc with no problem. The boot comes with two stainless steel clamps that fit each end of it. I used the 6 inch end to secure screen to filter out debris and keep it from entering the system. The boots are durable, the size is accurate, and they are a good value for the money. I would recommend them.
Review: Dust collector adaptor - Used this to drop my Rockler dust right collector from the twin branch to a single pipe for the cyclone. The 6" section was far too big but the strapping pulled it down tight and the seal is great. For my application this worked perfectly.

## Features

- Fast and easy installation with a screwdriver, nut driver, or socket wrench
- For vent, drain, sewer, and waste piping
- Provides a positive seal for drain connections
- Underground rated
- Compatible with cast iron, plastic (PVC), copper, lead and steel piping

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQM0JC |
| Best Sellers Rank | #98,173 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3,165 in Pipe Fittings |
| Brand Name | Fernco |
| Color | Black |
| Connector Type | Coupling |
| Customer Reviews | 4.5 4.5 out of 5 stars (149) |
| Exterior Finish | Black |
| Global Trade Identification Number | 00018578000131, 00018578015586 |
| Included Components | P1056-64 Flexible PVC Pipe Coupling |
| Item Dimensions | 4.8 x 6.81 x 5.56 inches |
| Item Type Name | Flexible PVC Pipe Coupling |
| Item Weight | 0.81 Pounds |
| Manufacturer | Fernco Inc. |
| Manufacturer Warranty Description | Warranty |
| Material Type | Polyvinyl Chloride |
| Model Number | 1056-64 |
| Number of Pieces | 1 |
| Size | 6" x 4" |
| Thread Size | 6.85 inches |
| Thread Type | NPT |
| UPC | 018578015586 018578000131 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Fernco
- **Color:** Black
- **Connector Type:** Coupling
- **Exterior Finish:** Black
- **Item Weight:** 0.81 Pounds
- **Item dimensions L x W x H:** 4.8 x 6.81 x 5.56 inches
- **Material:** Polyvinyl Chloride
- **Size:** 6" x 4"
- **Thread Size:** 6.85 inches
- **Thread Type:** NPT

## Images

![Fernco, 1056-64, Flexible Coupling, For Pipe Size 6" x 4" - Image 1](https://m.media-amazon.com/images/I/71tRnYFGtLL.jpg)

## Available Options

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

## Questions & Answers

**Q: will this work on connecting a 6" cast iron to a 4" clay sewer line??**
A: No, the 4" side on the P1056-64 is a nominal 4.46" inside diameter according to Fernco so it too small for 4" clay. The Fernco 1002-46 is designed for 6" PVC/cast iron to 4" clay and according to Fernco.com has a 6.39" by 5.18" inside diameter. Haven't worked with clay pipe but according to the sizing information from the Fernco site, any adapter with a clay connection requires that side of the adapter to be sized just for clay. Hope this helps.

**Q: Will this work on connecting a 6" dsw sch 40 pvc pipe to a sdr 35 4" pipe?**
A: It will work but because sdr 35 is thinner wall than sch 40 be careful not to over tighten the connection to the 35.

**Q: What are the inner diameter dimensions?**
A: Its difficult to measure as it is flexible and not perfectly round when not installed on a pipe.  As close as I can get the inside diameters are 4 1/2 and 6 1/2 inches.  Fits 4 inch schedule 40 PVC and the top fitting on a IBC container which is what I used it for.

**Q: 12"coupling reduce to 6"**
A: No. Mine fit loosely on an 8" to 6".

## Customer Reviews

### ⭐⭐⭐⭐⭐ Work well, fit 4 inch pvc, great value
*by M***D on May 7, 2025*

These 4”x6” runner boots work great. I am using them at the top inlets of a water harvesting system that utilizes 4 inch -pvc pipe schedule 40. The 4 inch end of the boot slips onto the pvc with no problem. The boot comes with two stainless steel clamps that fit each end of it. I used the 6 inch end to secure screen to filter out debris and keep it from entering the system. The boots are durable, the size is accurate, and they are a good value for the money. I would recommend them.

### ⭐⭐⭐⭐⭐ Dust collector adaptor
*by M***L on November 7, 2024*

Used this to drop my Rockler dust right collector from the twin branch to a single pipe for the cyclone. The 6" section was far too big but the strapping pulled it down tight and the seal is great. For my application this worked perfectly.

### ⭐⭐⭐⭐⭐ Boot dimension completes repair
*by E***E on September 26, 2024*

Attempting to repair a damaged sewer pipe I bought a 6”x4” reducer from a plumbing store and I ordered 1 thru Amazon. The sewer pipe diameter was larger than the 6” side of the boot. After several attempts of trying to install the boot from the plumbing store I was in a dilemma until the boot I ordered from Amazon was delivered. The dimensions are slightly larger in size and that made the difference installing the boot and completing the repair. I would definitely order this product over any product from a plumbing store.

## Frequently Bought Together

- Fernco 1056-64 6" x 4" Flexible Pipe Coupling (Connects Cast Iron, PVC, Steel or Lead)
- Fernco 1056-66 6-in. Flexible PVC Pipe Coupling for Cast Iron/Plastic/Steel Plumbing Connections in Black
- Fernco 1056-86 Flexible Pipe Coupling 8” CI/Plastic/Steel to 6” CI/Plastic/Steel

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-20*